Cheetahman 1 isn't that bad, kinda fun in a weird way. Don't play Ooze though it is TERRIBLE!!!!!
~~NGD

I really think you should play them all and let us know which are the best. 

I got one not to long ago and still need to do this myself.  I kind of like Cheetamen 1 as well, not sure why though.

I played them all in one sitting when I first got it. Some of the games just wrap around it's pathetic. I played the one shooter (there's about 20 shooters with the same engine on it btw) with all the funky enemies like teddy bears and stars and stuff, just to see what other weirdo things I could blow up, and played it for about 45 minutes. I assume most of them just go on forever (except Ooze I guess, because of the contest). I think I did "beat" one random one and it just kicked me back to the select screen.

All that said, none stuck any further out in my mind at all. Ooze has catchy music and I liked the one with the zombies and light bulbs, where the lights go out periodically if you don't kill somethings. Actually a reason to kill things in that game

Oh and as I remember there was a bubble-pop game on 52 but it was so poorly programmed that it was unplayable, as in there's no way to even beat the first level with the crappy physics and the behaviour of your character. This one also stuck out in my mind as the only one that was "impossible." There was one other one (shmup) that would spawn you every even-numbered level right in front of terrain so unless you start the level pushing a direction to get out of the way, you auto-die. But that's avoidable.

If you want to know what the best games on the cart are, just consult the inserts... it lists the "A" games and the "B" games and so on (though I can't remember what it officially calls them). So you've got your list of legendarily good gaming greatness packed in with the game already!