Alright, here it is. This was discussed in the GB completion thread, and it's a ripoff of the SNES strategies thread. This is meant to be a collection of tips, tricks, strategies, anything that could be useful to anyone trying to beat any Game Boy game.

I went through all the previous GB completion threads to hunt for info, to try to include as many people as possible. Game Boy had a tough time in 2015 and 2016; the effort was spliced over 3 different threads (and thread authors) each year, but I'm pretty sure I found them all. The earlier threads had hardly anything that seemed useful, and later ones had lots more. I might have missed things on accident.

Let me know if you have anything to add. I'll be going through and adding things myself, but I haven't beaten all that many games.

Usernames are shown as they appeared historically; some users may have changed their usernames since beating a game years ago.

4-in-1 Fun Pak
4-in-1 Funpak: Volume II
Addams Family, The
Addams Family: Pugsley's Scavenger Hunt, The
Adventure Island II: Aliens in Paradise
Adventure Island
Adventures of Lolo
Adventures of Rocky and Bullwinkle and Friends, The
Adventures of Star Saver, The
Aerostar
Aladdin
Alfred Chicken
Alien 3
C1AYBIRD: It's a top down adventure/horror survival type of game with some tricky areas that can quickly turn into a death (switching fans off and on and knowing which ones to do and when) so there is a lot of trial and error to it and this was actually the first time I beat it. The game is on a timer for a countdown to when the scientists get there so you have to burn all the eggs, and kill all the aliens before you can kill the queen and leave the planet (which did not happen in the movie haha) in order to beat the game. You have an inventory and can only hold so many items so that's where that survival gameplay comes in knowing what you need to carry and what you don't. I would recommend giving it a try though, definitely a good challenge but once you know what to do it can be done in about 30 minutes or so.

Alien Olympics
Alien vs Predator: The Last of His Clan
Jin: Once you get through the first part of the final boss battle by slashing off the alien Queen's arms there is a way to make the second part of the battle much faster and easier on yourself. If you time it just perfectly it is actually possible to do a bomb jump from the ground all the way up to the top of the Queen's head! You only get one shot at it since the ground underneath you will collapse when the bomb detonates, but if you do it just right and make the jump then once you're standing on her head she can't hurt you at all. Just crouch down and go to town slashing away at her with your wrist blades until she falls!

Alleyway
All-Star Baseball '99
Altered Space: A 3-D Alien Adventure
Amazing Penguin
PekoponGB: Pretty challenging game, but a lot of fun once you figure out what's going on. Black spots can be kicked at enemies with the A button, and destroying a spot with a minus sign on it makes the enemies go the opposite direction. Very useful to know.

Amazing Spider-Man 2, The
Amazing Spider-Man, The
bronzeshield: it's actually a fairly decent little platformer, marred by a manual that doesn't adequately explain the controls. To jump high, you can either be walking, or you can hold down + left/right to "charge" your jump; to swing from your web, hold A when you're descending from a jump that takes you into the top half of the screen.

Amazing Tater
Animaniacs
Arcade Classic No. 1: Asteroids / Missile Command
Arcade Classic No. 2: Centipede / Millipede
Arcade Classic No. 3: Galaga / Galaxian
Arcade Classic No. 4: Defender / Joust
Asterix & Obelix
Asterix
Asteroids
Farm UFOs by leaving one tiny asteroid fragment floating around, and wait for UFOs to spawn. Small UFOs are worth more points.

Atomic Punk
Attack of the Killer Tomatoes
Avenging Spirit
Balloon Kid
Barbie: Game Girl
Bart Simpson's Escape from Camp Deadly
Baseball
Bases Loaded
Batman Forever
Batman: Return of the Joker
Batman: The Animated Series
Batman: The Video Game
Battle Arena Toshinden
Battle Bull
PekoponGB: Battle Bull is a pretty great Game Boy game to be honest. It's very punishing early on, but once you've managed to finally buy your first weapon, the game becomes much easier. The game really makes you work hard for your power ups in the early game, which makes them so satisfying once you finally get them. Though don't buy that Turbo engine, as it's a troll item to try and make you screw yourself over by spending all your prize cash on it. The jump upgrades are 100% useless as well, so don't fork out money for any of them. Your priorities are the second engine, the second shovel, and the cheapest weapon.

Battle of Olympus, The
Battle Unit Zeoth
Battleship
Battletoads & Double Dragon: The Ultimate Team
Battletoads in Ragnarok's World
Battletoads
Battlezone/Super Breakout
Beavis and Butt-head
Beethoven
Beetlejuice
Best of the Best: Championship Karate
Bill & Ted's Excellent Game Boy Adventure: A Bogus Journey!
Bill Elliott's NASCAR Fast Tracks
Bionic Battler
Bionic Commando
Black Bass: Lure Fishing
Blades of Steel
PekoponGB: Blades of Steel is probably Konami's best GB sports title, though it does have a pretty hilarious exploit that breaks the entire game once you figure it out. All you have to do is score on the opponent once, get the puck at the face off afterwards, skate towards your own net, and only one guy will follow you over there. At this point you just skate in a circle and avoid him for the rest of the period, as there are no penalties for holding the puck too long in this game. Repeat for two more periods, then repeat the whole process two more times for the other two games in the tournament, and bam. Broken game. The computer can not combat this on any of the difficulty settings.

Blaster Master Boy
guitarzombie: Word to the wise with this game, dont use the candles until you NEED them in a level. Had to do the 2nd to last level with 1 candle... and theres no passwords. Its an easy but long game. But very annoying and hard if you cant see anything

Blues Brothers, The
Blues Brothers: Jukebox Adventures, The

Bo Jackson: Two Games In One
Boggle Plus
Splain: Don't hunt for big/hard-to-find words. The CPU seemingly just gets awarded a word list based on a percentage of all possible words. You can check their lists and see how many words they miss that a human would have gotten (tenses, plurals etc) So the best strategy is honestly to scramble and get all the words you can. Quantity over quality. If you can pull in a big enough percentage of the total possible word list, you can usually get a couple more points than Charles (Charles is always the biggest threat), and if you can do it a few rounds in a row, then you win. Hopefully you don't get an unlucky round with lots of huge words that Charles got and not you, but a 25-point tournament is usually short enough that it's not too big a deal to start over.

Bomb Jack
Bomberman GB
Bonk's Adventure
Bonk's Revenge
Boomer's Adventure in ASMIK World
PekoponGB: I recommend looking at the GameFAQs guide to see where the keys are buried to save yourself a ton of frustration. Also keep in mind that you can catch the boomerangs you throw, which makes bosses a lot easier. You can only use the same boomerang three times though. Once you climb the tower, you have to climb back down the tower, which means doing all the levels again in reverse.

Boulder Dash
Boxxle
Boxxle II
Brain Drain
Brainbender
Bram Stoker's Dracula
BreakThru!
Splain: It's usually not worth it to plan too carefully on a new board, especially on the first game loop. Just spam clears until you're down to a few dozen blocks, then learn to scroll the "extras" and drop them where you want them. When a single color is wiped from the board, no new blocks of that color will appear, so focus on one color at a time.

Bubble Bobble Part 2
Bubble Bobble
Bubble Ghost
Bubsy II
Bugs Bunny Crazy Castle 2, The
Bugs Bunny Crazy Castle, The
Splain: There are infinite continues, which means infinite lives if you don't care about your score. But there's a lot of random chance you have to deal with. (enter a pipe that takes you to an area you can't see, and cross your fingers that there isn't an enemy standing at the other end, etc) Figure out a good strategy, and it might not work twice in a row. Then again, something that didn't work the first time might be fine the next try. So for each level you just sort of wing it, and then the game ends.

Burai Fighter Deluxe
BurgerTime Deluxe
Bust-A-Move 2: Arcade Edition
Bust-a-Move 3 DX
Buster Brothers
Caesars Palace
Floating Platforms: To win, I started off by taking my $1000 to the $500 slots and kept trying that until I hit a line worth $5K or more. Then instead of going to blackjack, I went to the wheel of fortune area, mostly betting on the 2:1 odds spot. Every $100 you bet turns into $300 because you double the cash and get your bet back. The max bet of $10K turns into $30K and that adds up quick. Plus, the 2:1 hits pretty frequently. So, it's faster than blackjack and has better odds without any computer BS hits. I also took a big chance on a 40:1 spot and got very lucky. Overall, I sunk over 11 hours into it, but my winning run took less than an hour before I got that "red" car and a $141,000 check.

Captain America and The Avengers
Casino FunPak
Splain: The easiest way to break the bank is to focus on video poker and ignore every other game. Keep face cards or doubles and cross your fingers. Usually you can do well enough to generally break even, maybe a slight gradual decline in winnings, until you get the occasional big hand. Jump up to higher betting tiers as you reach them.

Casper
Castelian
Castle Quest
Castlevania Adventure, The
Castlevania II: Belmont's Revenge
Zycrow: The penultimate boss gave me the most trouble - after dying several times, I looked up some guides and videos, and the consensus was generally "get an axe, try to predict his jumps, and pray!" Dracula himself was tough but predictable. PekoponGB: The Axe is actually really bad at Soleiyu. It's the one time in the entire game that Holy Water is useful. The trick with him is to figure out his movement. He has no exact pattern, but there are smaller patterns in his movement that you can use to your advantage. There's only one thing he does I haven't quite figured out yet that makes him unavoidable, but every other thing he does I can predict and avoid. Eventually you'll be able to beat him every time you fight him. Though I'll admit he gave me a ton of trouble for a long while.

Castlevania Legends
Only realized at the very end of the game you can go into 'berserk' mode and make quick work of the bosses. If I had only known that earlier > 

Catrap
Centipede
Ferret Oxide: For Centipede, my method (and probably every one else's) is to reduce the centipede to a single pod and then actively avoid killing it. Just shoot the other bugs and any additional centipede pods that appear. This is far easier than trying to kill the centipede quickly on each level.

Championship Pool
Chase H.Q.
Chessmaster, The
Choplifter II
Choplifter III
Chuck Rock
Cliffhanger
College Slam
Contra: The Alien Wars
Brock Landers: infinitely spawning enemies can be milked for extra 1ups. Just like in its console big brother.

Cool Ball
Cool Hand
Cool Spot
Cool World
guitarzombie: you can always refill your health jumping between worlds so after I found that out it was much easier.

Cosmo Tank
Crystal Quest
Cutthroat Island
Cyraid
Daedalian Opus
Daffy Duck: The Marvin Missions
Darkman
Darkwing Duck
Days of Thunder
Dead Heat Scramble
Bronzeshield: The last couple races are brutal. You're heavily dependent on random item drops to stop the timer or help you in other ways; without those, it seems almost impossible.

Dennis the Menace
Desert Strike: Return to the Gulf
Dexterity
Dick Tracy
Die Maus
Dig Dug
Donkey Kong Land 2
Donkey Kong Land III
Donkey Kong Land
Donkey Kong
 

Double Dragon 3: The Arcade Game
guitarzombie: It's a short game but you really gotta learn the hitboxes and how to counter hit enemies with your jump kick to get anywhere.

cartman: basically you counterattack the enemies jumpkicks. Punch, move away, turn around, punch until he's down. Or you you can counter with a jumpkick of your own to lay them down immediately. You can also come at an downward angle by half-circling the enemy tailing you and then jumpkick him in that fashion when you're in position.

Double Dragon II
Double Dragon
Double Dribble: 5 on 5
Dr. Franken II
Dr. Franken
Dr. Mario
Splain: Lay pills sideways more often than upright. Learn to see each column as the color of the topmost virus/pill. Lay pills sideways in alignment with each column's "color," even if one column is stacked several rows above the other. Then nothing is wasted and the combos build themselves. When you lay a pill upright at the top of the... "bottle," so that one half of the pill extends above the playfield, that half wil disappear, which is useful at the beginning of round 20+.

DragonHeart
Dragon's Lair: The Legend
Dropzone
Ferret Oxide: My only tip for this is to be patient. Zipping along will get you killed very quickly, so keeping a distance from enemy craft and moving slowly around the map - even at the expense of some of your men - is worth it.

DuckTales 2
DuckTales
Earthworm Jim
Elevator Action
Elite Soccer
Extra Bases
F1 Pole Position
F-1 Race
PekoponGB: This game is all about corners, and getting though them quickly. It makes a lot of sense in retrospect, since those are really the only points where you CAN lose time. Pumping on the nitro at the right time during a corner is how you keep up, and you can easily learn when to trigger it by counting the number of signposts that are on each turn. If there are three posts, pump on the nitro when you see the third post. Depending on the intensity of the curve, and where you are placed in the road, you may even be able to trigger it before you see the third post. - If you're having trouble with specific turns, count the posts and try to work from that. For those horrible 90 degree turns folloed by 90 degree turns, there's not a ton of consistant info I can give you, but generally slowing to a craawl is not the way to do it. Make use of the brakes, and in stage 5 at the end of the course, you can actually just swerve through those sharp corners at max speed if your timing and positioning is correct, and only if you're using car type A. - Speaking of which, don't pick Car Type B. It's absolutely horrible, and its higher max speed is completely useless because you'll have to brake more on corners, which is the only place to gain time. It also has less nitro than Car Type A, and the Nitro's top speed is slower on Car Type B. Pick Car Type A if you want to win.

F-15 Strike Eagle
Faceball 2000
Fastest Lap
Felix the Cat
Ferrari Grand Prix Challenge
Fidgetts, The
FIFA International Soccer
Floating Platforms: 1) Put the field on hot or dry and use artificial turf. I was using drenched most of the time because it slowed the ball down which I thought would be better for control. The extra bounce you get from hot artificial allowed some great cheap goals on my side the CPU didn't get. My goalie scored a couple times! 2) Hold the A button and release it to kick, don't tap. I think this is the key point missing from gamefaqs. No matter what, it's not an exact science. I found myself asking "how do I kick the ball forward" 5 hours into my playing, which isn't a good sign. However, holding the button usually allowed me to actually kick the ball after releasing it with more consistency, whereas tapping it rapidly when the ball was in front of me caused my player to stand awkwardly while the other team stole it away. Also, you can hold the button while you move towards the ball and release it when you get there, which was a big help to figure out.

FIFA Soccer 96
FIFA Soccer 97
FIFA: Road to World Cup 98
Fighting Simulator: 2-in-1 Flying Warriors
Final Fantasy Adventure
Final Fantasy Legend II
PekoponGB: One of the best games on the Game Boy, but also the hardest RPG I've ever played. The endgame is really brutal, so be super prepared. Also keep in mind that you have to lose a battle by having your party get knocked out at some point as part of the plot.

Final Fantasy Legend III
Final Fantasy Legend, The
Fire Fighter
Fish Dude
PekoponGB: You can die as much as you like in a level without worrying about your Fish total resetting.

Fist of the North Star: 10 Big Brawls for the King of Universe
TinFerret: It's pretty easy with Raoh

Flash, The
Flintstones, The
Flintstones: King Rock Treasure Island, The
Flipull
Football International
Foreman for Real
Fortified Zone
guitarzombie: It's easier to beat the game from the beginning, than to use a password for the last level.

Frank Thomas Big Hurt Baseball
Franky, Joe & Dirk: On The Tiles
Frogger
Game & Watch Gallery
Splain: don't get cocky in the games where you gather stuff and then deposit it somewhere. (octopus, oil panic) 90% of my deaths in those games are due to my impatience and not depositing soon enough. The point bonuses in modern Oil Panic when Yoshi blows Bowser away (when you give Yoshi 6 drops at a time on the left side) are great, but past the first few hundred points it gets too risky. For me anyway.

Game Boy Gallery
Game of Harmony, The
Gargoyle's Quest: Ghosts 'n Goblins
Gauntlet II
Gear Works
Splain: Pause the game at any time to stare at the board and plan out your strategy. In later levels it becomes almost impossible to pass the levels without doing this.

George Foreman's KO Boxing
Getaway: High Speed II, The
Ghostbusters II
Go! Go! Tank
Goal!
Godzilla
Golf
Gradius: The Interstellar Assault
Great Greed
Gremlins 2: The New Batch
HAL Wrestling
Hammerin' Harry: Ghost Building Company
Harvest Moon GB
Hatris
Heavyweight Championship Boxing
Heiankyo Alien
Hercules
High Stakes Gambling

Hit the Ice
Home Alone 2: Lost in New York
Home Alone
Hook
Hudson Hawk
Hugo 2
Humans, The
Hunchback of Notre Dame, The
Hunt for Red October, The
Hyper Lode Runner: The Labyrinth of Doom
In Your Face
Incredible Crash Dummies, The
Indiana Jones and the Last Crusade
International Superstar Soccer
Iron Man and X-O Manowar in Heavy Metal
Ishido: The Way of Stones
Jack Nicklaus Golf
James Bond 007
Red: [on getting enough money in the casino to access the secret room] I just played Blackjack until I had enough money. Since you can bet any amount you want, you really only have to win two games in a row. If you lose all your money, you can just go to the cashier and he'll give you more. Jeep Jamboree: Off Road Adventure
Jelly Boy
Jeopardy! (all versions)
Splain: Skip the entire first round. Pick questions until the CPU answers correctly, then put your Game Boy down until Double Jeopardy. When you pick it up again, the CPU will only have a few hundred bucks, and may even be negative by a few hundred. Then the CPU magically gets a little smarter. Also, try to get far enough ahead that you don't have to wager anything for Final Jeopardy. The game is buggy and sometimes the Final Jeopardy question is impossible to answer correctly. koifish: The secret to Jeopardy was just getting a strong lead off of high-value questions (which were relatively easy but the AI would never get them), after emptying the board of high-value questions and the daily double(s), you just need to select any easy question. The AI should get it right, and will then auto-play through the rest of the board for you, often even getting questions wrong or not answering, until final jeopardy comes up and you have such a strong lead that they can't possibly win. It's important to get the double jeopardy questions and bet high though, else you might actually have to try! The only really hard part of this game is entering longer answers into the keypad before time runs out. Jetsons: Robot Panic, The
guitarzombie: Game is super easy as long as you avoid the switch at the last level that fills the level up with water. Splain: Sometimes the bonus doors take you to places you don't want to go and you can lose lives. Ignore all bonus doors and the switches in the last level, to get to the end sooner. Jimmy Connors Tennis
Joe & Mac
Jordan vs. Bird: One on One
Judge Dredd
Jungle Book, The
Splain: You're not trying to reach the end of each level, you're trying to collect all the gems. There's a gem counter at the bottom of the screen. Jungle Strike
Jurassic Park Part 2: The Chaos Continues
Jurassic Park
Ken Griffey, Jr. Presents Major League Baseball
Kid Dracula
Kid Icarus: Of Myths and Monsters
Killer Instinct
King of Fighters '95, The
King of Fighters: Heat of Battle, The
Kingdom Crusade
Kirby's Block Ball
Kirby's Dream Land 2
Kirby's Dream Land
Kirby's Pinball Land
Kirby's Star Stacker
Klax
Knight Quest
Krusty's Fun House
Kung Fu Master
Kwirk
Lamborghini American Challenge
Last Action Hero
guitarzombie: The first level is honestly the hardest. The enemies can sneak in a punch as you're hitting them. You basically have to run right up to them IMMEDIATELY and spin kick them 3 times. If you're close the game actually moves you further back just out of distance of their hits. If you whiff on the first kick cuz you were too far the first time, it doesnt seem to work. I dont get it at all. Lawnmower Man, The
Lazlos' Leap
Legend of the River King GB
Legend of Zelda: Link's Awakening, The
Lemmings 2: The Tribes
Lemmings
Lethal Weapon
Lingo
Lion King, The
Little Mermaid, The
Lock 'n' Chase
Looney Tunes
Loopz
Lost World: Jurassic Park, The
Lucky Luke
Lucle
Madden '95
Madden '96
Madden '97
Magnetic Soccer
Malibu Beach Volleyball
Marble Madness
Mario's Picross
Maru's Mission
Matthias Sammer Soccer
Maui Mallard in Cold Shadow
Max
Mega Man II
Mega Man III
Mega Man IV
Mega Man V
Mega Man: Dr. Wily's Revenge

Megalit
Mercenary Force
beatthegameboy: So much easier with a single ninja. I could get to last level every time with 4, but you spend so much to heal them, and the hit box is so large you just keep having to spend. With 1 character, you are small and it plays like a normal shoot'em up. (add the princess at the end to get the good ending.)

Metal Masters
Metroid II: Return of Samus
Mickey Mouse: Magic Wands!
Mickey's Dangerous Chase
Junk_isHxC: From what I remember from beating it last year, you could constantly get 1ups on the last level to beat Pete.

Mickey's Ultimate Challenge
Micro Machines 2: Turbo Tournament
Micro Machines
Floating Platforms: Takes quite a bit of practice, but once you eliminate the 3 fastest people after 9 races, it gets significantly easier. You just have to memorize those 9 courses and get the turns down because there's some serious rubber banding going on with those fast guys.

Mighty Morphin Power Rangers: The Movie
Mighty Morphin Power Rangers
Milon's Secret Castle
Miner 2049er
Missile Command
If you have an Arcade Classics 1 cartridge, there are a few elements in that version of Missile Command that make it easier than the standalone cart version. (explosions seem bigger, last longer, more generous hitboxes, etc)

Mole Mania
Monopoly
Monster Max
Monster Truck Wars
Splain: sometimes it's better to drive with one tire off the track and hit the big bumps slowly, than to go flying off of them at full speed into a wall.

Montezuma's Return
Mortal Kombat & Mortal Kombat II
Mortal Kombat 3
Mortal Kombat II
Mortal Kombat
Motocross Maniacs
Mouse Trap Hotel
Mr. Chin's Gourmet Paradise
Mr. Do!
Mr. Nutz
Ms. Pac-Man
Muhammad Ali Heavyweight Boxing
Mulan
Mysterium
Mystical Ninja Starring Goemon
Nail 'n' Scale
Navy SEALs
NBA All-Star Challenge 2
NBA All-Star Challenge
NBA Jam: Tournament Edition
NBA Jam
NBA Live 96
Nemesis
acromite53: Like any Gradius game, keep your power ups or else.

New Chessmaster, The
NFL Football
NFL Quarterback Club 96
NFL Quarterback Club II
NFL Quarterback Club
NHL 96
NHL Hockey 95
Nigel Mansell's World Championship Racing
Ninja Boy 2
Ninja Boy
Ninja Gaiden Shadow
Ninja Taro
Nintendo World Cup
Nobunaga's Ambition
Oddworld Adventures
Olympic Summer Games
Operation C
Othello
Ottos Ottifanten: Baby Bruno's Nightmare
Out of Gas
Pac-Attack
Pac-In-Time
Pac-Man
Pagemaster, The
Palamedes
Panel Action Bingo
Splain: If you camp on a number without claiming it, the CPU will camp on the "next" number, ready to claim it the second you claim yours. In later levels you absolutely have to camp on the earliest number you can, so that you can stare at the board and find the easiest bingo you can get by waiting on each of the earliest numbers in the row, such that the CPU won't get one first. The CPU blindly goes for whatever number is next. Toward the end of the game, the CPU moves perfectly, so the only way to beat it is with good strategy, taking your human slowness into account.

Paperboy 2
Paperboy
sunsetflip84: I figured out that keeping your front tire lined up between both the edges of the sidewalk and the grass...you can bypass: breakdancing guy, construction workers, and especially the SKATE BOARDER!

Parasol Stars: Rainbow Islands II

Parodius
Penguin Wars
PGA European Tour
PGA Tour 96
Pierre le Chef is... Out to Lunch
Pinball Deluxe
Pinball Dreams
Pinball Fantasies
Pinball Mania
Pinocchio
Floating Platforms: I did have to continue once because I didn't understand the second level with Jiminy Cricket. I thought you had to go somewhere and fell into pits, but really you need to stay put and defend.

Pipe Dream
Pit-Fighter
Loxx O))): It actually took me like 40 minutes or so. Honestly, it was more boring than anything.   Stand in a certain spot and keep kicking and hope you win.

Play Action Football
Pocahontas
Pocket Bomberman
Koifish: The main thing to learn how to do in this game is to trust bombs as your platforms, you can jump off of them, so don't fear them too much. Also, be on watch for enemies. Don't look at your bombs, look at your surroundings! On bosses, remote bomb is overpowered, but if you don't have that, then just spam bombs. The final boss has some annoying projectiles, he never telegraphs his moves (except for one where he goes to the top of the screen and rains projectiles), and he teleports constantly around the stage. Just be careful to dodge his attacks and you can win by slowly chipping away at him. Since you can't take any hits without dying, your dodging is paramount to victory.

Pokémon Red/Blue
Popeye 2
Pop'n TwinBee
Populous
Power Mission
Power Racer
Prehistorik Man
Primal Rage
Prince of Persia
Prophecy: The Viking Child
Punisher: The Ultimate Payback, The
Pyramids of Ra
Q*bert for Game Boy
QBillion
Qix
Splain: make sure to cover a huge amount of the board in early levels. Bit by bit, claim skinny boxes not-all-the-way up the center of the field, and slowly spiral in toward the Qix on whatever side it is on. Trap it as much as you can, then draw a line (using the B button, which draws more slowly but gives you more points) to finally claim all the space you've blocked off. You'll get double points for the claimed area and a huge level bonus. It's apparently possible to get 99% of the field this way, which gives you an additional 50,000 points on top of all that. When you have 2 Qix, split them to end the level and get a multiplier for your next level bonus. Chain up to five of those bonuses, then do the spiral trick when you're back to a single-qix level and cash them all in.

Quarth
Race Days
Race Drivin'
Radar Mission
bronzeshield: my recommendation for Game A would be to play on a starting grid of 12x12 (which becomes 8x8 in Rounds 2 & 3), with airplanes off, but near-miss and lucky shots on. Set your ships up at the edge of the screen, but try to keep at least two squares between them, and never put them on adjacent squares (see why below). When you're trying to find enemy ships, fire your shots in the same pattern as a chess knight, i.e. two squares over and one up. Why? Well, with near-miss turned on it'll beep if your shot lands next to an enemy ship (horizontally or vertically -- no diagonals), so you're essentially covering a + shape with every shot, and that shape tiles if you use a knight's-move pattern. Above all, if you know you've found a big ship (4-7 squares), don't take the time to systematically blow it up! Instead, wait to see if you get a black "LUCKY" shot, which is a superbomb that'll blow any ship up in a single shot, plus any ships that are in contact with it. It's absolutely devastating, and is probably the only way to win once you're in Rounds 2-3 and you're down to two or three ships. In the last round especially, you're facing a 7-square ship, so it's worth waiting to see if you can destroy the whole thing -- and any adjoining destroyers! -- with one shot.

Raging Fighter
Rampart
Real Ghostbusters, The
acromite53: I had to watch a video on how to defeat the final boss. It involved clearing the blocks and then making him follow you. He gets trapped when the blocks reappear.

Ren & Stimpy Show: Space Cadet Adventures
Ren & Stimpy Show: Veediots!, The
Rescue of Princess Blobette, The
Reservoir Rat
Revenge of the 'Gator
Riddick Bowe Boxing
Ring Rage
sunsetflip84: Anyone that wants someone over powered should pick Shadam. His rolling kick (forward, forward, kick) is devastating. What I do is knock my opponent down with his standard kick (it's fast) and while their on the ground do the rolling kick (repeatedly too). ALSO, in later matches, just close in for a grapple, then mash the punch button. Rolling Kick while the sad sack is on the mat for another victory! Press A and B to pin. Voila!

Road Rash
Splain: Finishing Road Rash is just a matter of making it through the last few long races without crashing too many times and wrecking the bike. It turns into a game of hoping you don't crest a hill too fast and fly into a tree, or crash into a car that you thought was in the other lane because the graphics are bad. if you crash too many times, you wreck your bike and can't finish the race. It's not even an issue of needing to finish 1st. That's easy.
- There's a password after every race so there's no risk of losing more than a couple minutes per attempt.
- This game does not run on Game Boy Color/Advance!

Robin Hood: Prince of Thieves
RoboCop 2
RoboCop Versus The Terminator
RoboCop
Rodland
Roger Clemens' MVP Baseball
Rolan's Curse 2
Rolan's Curse
R-Type II
R-Type
Rugrats Movie, The
Samurai Shodown
Sea Battle
SeaQuest DSV
Sensible Soccer: European Champions
Serpent
Shanghai
Shaq Fu
Side Pocket
Simpsons: Bart & the Beanstalk, The
Simpsons: Bart vs. The Juggernauts, The
Simpsons: Itchy & Scratchy in Miniature Golf Madness, The
koifish: In order to survive, you had to basically inch across the levels, finding the nasty Itchy waiting for you just out of sight, and then you have to quickly handle them as they begin their attack. It's mostly inching across stages followed by quick reactions. The minigolf itself is actually somewhat unimportant to finishing the game; Scoring under par is merely a way to get extra lives.

Skate or Die: Bad 'n' Rad
Skate or Die: Tour de Thrash
Small Soldiers

Smurfs' Nightmare, The
Smurfs Travel The World, The
Smurfs, The
Sneaky Snakes
Snoopy's Magic Show
Snow Bros
Soccer Mania
SolarStriker
Solitaire FunPak
Solomon's Club
Space Invaders
Spanky's Quest
Speedball 2
Speedy Gonzales
Spider-Man 3: Invasion of the Spider-Slayers
Spider-Man and the X-Men in Arcade's Revenge
Spirou
Splitz
Sports Illustrated for Kids: The Ultimate Triple Dare!
Exit the half-pipe with the DOWN button.

Sports Illustrated: Championship Football & Baseball
Sports Illustrated: Golf Classic
Spot: The Cool Adventure
Spot: The Video Game
Spud's Adventure
Spy vs. Spy
Square Deal: The Game of Two Dimensional Poker
Star Trek Generations: Beyond the Nexus
Star Trek: 25th Anniversary
Star Trek: The Next Generation
Star Wars: The Empire Strikes Back
Star Wars
Stargate
beatthegameboy: If you stack the whole sequence in order in one big stack, you auto win the square. That ended up working out for me much more regularly than trying to win by overwhelming the CPU.

StarHawk
Stop That Roach!
PekoponGB: It's a lot easier to play once you've watched the in-game help stuff that explains the A.I for the roaches.

Street Fighter II
koifish: I chose Ryu and successfully defeated every opponent using jump kicks, standing kicks, and crouch kicks, usually in that order. Just spam kicks and you will win.

Street Racer
Sumo Fighter
Sunsoft Grand Prix
Super Battletank
Super Black Bass
Super Breakout
Super Chase H.Q.
Super Hunchback
Super James Pond
Super Kick Off
Super Mario Land 2: 6 Golden Coins
Super Mario Land
Super Off Road
koifish: you have a huge disadvantage against the enemy racers before you have boosted your stats, and since money earnings are directly tied to how well you place in the race, it's a pretty hard slope to climb at first. I was really frustrated until I finally scraped together the cash. Avoid walls and other cars as much as possible. This game doesn't play fair, and will often punish you severely for collisions, while the other trucks will barely ever be seriously affected. If you hit a wall and get stuck, do not press A or B. Release both buttons, and use the d-pad to slowly turn your car back around in the right direction. Only then should you keep driving (also, a nitro here will often help you get back up to speed, but don't nitro if it will just send you into another wall). Start out only spending most of your money, hold onto 10%-30% for future rounds so you can save up for the more expensive bonuses. Always try to have several nitro, 5 minimum is a great number, but do what you can given your means. Nitro at the right time will make all the difference in the world. Max out your top speed as quickly as possible, this is the biggest game changer for overcoming the computer racers. Focus then on acceleration to help when you hit walls or slow down. If you are having trouble on turns, then consider slowing down (just stop holding A as there is no brake button), or start buying tire/shocks since they help you to grip the road and to take tighter turns respectively. There's one track, (I'll have to look up the name), it's just a bunch of zig-zag hills. I don't think you can really win on that one, it's nearly impossible to avoid walls or other trucks, and they will just breeze on by. My advice on that track is to just hang on for dear life, and try to finish 3rd or higher so that you don't lose a credit. There's another track (I'll have to look that one up too) which has bad lap completion detection. The track is contains one path divided into two halves, but at several points, the halves connect, and it is possible to "skip" from the first half to the second, or vice-versa. DO NOT DO THIS! Even just driving a little bit too far off of your current section of track will cause the game to think that you never completed that specific section, meaning all the lap work done after that section (potentially an entire lap's worth) will be ignored by the game. My only advice is to play it very strict, and only stay on the track section which matches your current lap progress. DO NOT attempt to skip, you will just be wasting time. Nitro Tip: If you have maxed out all other stats, then remember this: A first place finish gives you 150,000, which is enough to buy 15 nitro. Therefore, as long as you use less than 15 nitro per race, and still take first, you can keep on spending all of your money on nitro, and your stockpile won't decrease. Super Tip: If you are ever desperate to win, and if you have a LOT of nitro (at least 20-30), you can rocket to first place pretty easily if you just spend nitro constantly. Even in some tight corners you can nitro spam into the turn, start the turn, slam into the wall from going too fast, and then immediately nitro from there, and you will lose almost no speed. I only recommend doing this if you are nearly finished with the game, if you have every other upgrade maxed out, and if the only thing left for you to buy is nitro.

Super R.C. Pro-Am
Super Scrabble
Super Star Wars: Return of the Jedi
Superman
Swamp Thing
guitarzombie: It took a while for me to get the right rhythm and pick the level that makes the most sense. I'd say do levels 2, 1, then 3 if you wanna try to beat it.

Sword of Hope II, The
Ferret Oxide: The gauntlet of final bosses are easy once you have the Empower spell.

Sword of Hope, The
Splain: Grinding is necessary, but it's very easy; if you can find a good spot where the game has you walking back and forth, and the enemies aren't too strong, you can just watch cat videos while blindly spamming A, occasionally looking down to see what level you've made it to, and if you need to heal.

T2: The Arcade Game
Jin: Play the game on a GBC, GBA, or Game Boy Player. The enemies and your aiming reticle are all automatically colored a different color than the background so that you can clearly see what is going on and where everything is. On a monochrome system, everything blends too much with the background.

Tail 'Gator
TaleSpin
Tamagotchi
Tarzan: Lord of the Jungle
Tasmania Story
Beatthegameboy: To get ending instead of loop seems to require picking up the animals, which means you squish the required amount of enemies each round. Not sure if you needed them all so I made sure to get it on every stage to be sure.

Taz-Mania 2
Taz-Mania
Tecmo Bowl
Teenage Mutant Ninja Turtles II: Back from the Sewers
Teenage Mutant Ninja Turtles III: Radical Rescue
Teenage Mutant Ninja Turtles: Fall of the Foot Clan
Tennis
bronzeshield: the way to beat the CPU is to serve a slow ball out wide, wait for the CPU to begin its return swing, and then rush the net and hit the ball to the open court. If you rush forward too soon, the CPU will lob you time and again.

Terminator 2: Judgment Day
14u2ponder: stage 1, don't stop running for anything, and rarely try to kill the robot henchmen trying to kill you. Jump over them, run through them, but don't stop. The bombs being dropped have to detonate while you are literally standing on the bomb, if it is a millimeter from you you won't take damage. Also, your life bar only carries over to stage 2, so you don't have be too careful with it. The erason is stage 2 is the simpliest stage in the entire game and you can easily get past it without much of a life bar.

Tesserae
Splain: This game is not intuitive; it looks like a simple match-3 game, but you can't just pick it up and play it, you have to study the rules to learn what moves are allowed. Check a manual or GameFAQs to learn the legal moves. - Even when you're doing a Tournament, you can always pause the game and select "restart the same mosaic" to restart that board with different tiles. - Don't be ashamed of using the Undo function. The manual itself states that it's just a part of finding the solution, and it's not cheating. It's not about solving each board on the first try, it's about using trial and error (and Undo) to find a legal solution to each one.

Tetris 2
 

Tetris Attack
Tetris Blast
Tetris Plus
Tetris
Tintin in Tibet
Tintin: Prisoners of the Sun
Tiny Toon Adventures 2: Montana's Movie Madness
Tiny Toon Adventures: Babs' Big Break
Tiny Toon Adventures: Wacky Sports
Tip Off
Titus the Fox
guitarzombie: Not too hard of a game, just not much documentation on it. Basically just find and get to the end of the levels. Some trickier than others due to secrets.

Tom & Jerry
Tom and Jerry: Frantic Antics
Top Gun: Guts and Glory
Top Rank Tennis
Torpedo Range
Total Carnage
Toxic Crusaders
Toy Story
Track & Field
Track Meet
Trax
Trip World
True Lies
bronzeshield: The final boss has a "safe zone" off to the left. If you shoot him from there, his grenades won't reach you, and you can pick him off at your leisure. guitarzombie: The last couple of levels were really tricky because of how much damage you can take from rockets and grenades and the weird shooting mechanics. Knowing you can hold the B button to 'lock' your pistol/shotgun helps a lot. Floating Platforms: It pays to play it a bit stealthy and creep forward shooting blindly, because you can kill guys off screen before they "see" you to shoot back.

Tumblepop
Turn and Burn: The F-14 Dogfight Simulator
Turok: Battle of the Bionosaurs
Turrican
Ultima: Runes of Virtue II
Ultima: Runes of Virtue
Ultra Golf
Un Indien Dans La Ville
Universal Soldier
Urban Strike
Vegas Stakes
V-Rally Championship Edition
Ferret Oxide: The trick is to memorize the sequence of obstacles on each lap. Once you've done that then beating the AI cars is a lot easier.

Wario Blast: Featuring Bomberman!
Wario Land II
Wario Land: Super Mario Land 3
Waterworld
Wave Race
Wayne's World
WCW World Championship Wrestling: The Main Event
We're Back!: A Dinosaur's Story
Wheel of Fortune
Who Framed Roger Rabbit
WildSnake
Winter Olympic Games: Lillehammer '94
Wizards & Warriors X: The Fortress of Fear
Wordtris
WordZap
World Beach Volley: 1992 GB Cup
World Bowling
World Circuit Series
World Cup 98
World Cup USA '94
World Heroes 2 Jet
Worms
WWF King of the Ring
WWF Raw
WWF Superstars 2
WWF Superstars
WWF War Zone
Floating Platforms: Run to the turnbuckle, climb and dive off it (you can control your flight a bit and it will auto lock to their distance, which is fantastic). If you hit (way too many near misses), run back to the turnbuckle to do it again while they're down. If you miss, hope you can avoid the loop. [of getting grabbed and hit over and over] The championship match is in the cage, so you can't use that tactic. Instead, I spent a little more than an hour to try to get the controller to respond to my new pattern of punching, grappling first (really hard to do) and throwing them against the cage, then repeating until his health is low. My hands hurt after this. Thankfully there are passwords after every win and no penalty for continuing and using the passwords.

Xenon 2
Yogi Bear's Gold Rush
Yoshi
Yoshi's Cookie
Zen: Intergalactic Ninja
Zool: Ninja of the "Nth" Dimension
Zoop

Contra Alien Wars - infinitely spawning enemies can be milked for extra 1ups. Just like in its console big brother.

Double Dragon 3 basically you counterattack the enemies jumpkicks. Punch, move away, turn around, punch until he's down. Or you you can counter with a jumpkick of your own to lay them down immediately. You can also come at an downward angle by half-circling the enemy tailing you and then jumpkick him in that fashion when you're in position.