Ok guys, it's time for a discussion and I wouldn't mind actually taking one of these to a new post so others not following this thread can chime in. Regarding the Tetris game, I've looked through my copies of Tetris, Tennis and Baseball and I can definitely say that printing was poor for those early runs. Keep in mind, the Japanese games didn't have these silver bars so this was a new process and I imagine after printing a few hundred thousand to maybe even a million labels, QA was slightly less than pleased and changed the font or thickness of the lettering. I know on my carts, some of the letters appeared to have small bit missing, toward the tips of some letters. This isn't profound but it's obvious that the lines were just to thin for the ink that was used and variation in ink-flow caused some of these to have poor printing. I also speculate that the hyphens were probably some of the thinnest lines used in printing the text, so that's why they were missed. If/when ink was running toward the end of the print cycle, or maybe if they tweaked the print-speed for faster production, this is the first area of the print job where ink tends to not show up. Just a guess.
That said, if we want to put this in as an error, and we generally agree, I'm going to add it but mark it as a variant. But, if we choose to do that, let's check out or Tennis, Baseball and Alleyway carts and see if they have any with missing hyphens. Those were all the initial release games (did I miss one?) so I'm guessing there's a moderate chance they might be missing hyphens too, but that might not be the case because far more Tetris labels were needed at released than any of those games. The point is, they may have rush-printed the Tetris labels but not the others.
Ok, now regarding Killer Instinct. Yes, I've expressed my concern that someone could have monkeyed with this and heat-removed the label and put it on a GBC cartridge case. All pieces would be legit but it wouldn't be an actual release. There are a couple of ways this game could have come into existence, because I don't doubt that the shell or board is real. I've not gotten out my magnifying glass to compare the label but at a glance, it seems legit. I think the best tell-tale sign is if this game has the facility stamp on the label and does the pressure level and font style actually match other GB carts. If so, I'm willing to believe all components are legitimate.
But is it a true variant? This is where we still need more questions answered, and hear me out. Who knows. Maybe this is something Rare made for a few, select employees. They took the components, hand assembled them and game them out to 5-20 people. Maybe there was a competition packed in with a game, or printed in a magazine where 100 or of these games were given to lucky winners. If we can find a copy of the promotion, then that verifies it's a "variant". And, last and probably not the case, maybe someone at Nintendo was a HUGE fan of the game, so they made their own. They would have had to have had connections directly to the manufacturing plant so they could at least get a label and a blank black cart shipped to them. The other, last option I can think of is that before final assembly, Nintendo/Rare requested 1-5 batch sets of "final production" carts where one set was standard gray and the other was black. At some point, before actual production was started, the idea of going with a black cart was rejected and this is one of those final production prototypes. Or, another spin on it, Rare ordered a sample production of Black carts, which they wanted, but being that it'd cause confusion as to whether it was a GBC cart or not, Nintendo halted the idea and told them they couldn't do that.
There are a multiple possibilities of where this could legitimately have come from, but I hesitate to call a final-production prototype a "variant". TL;DR, we don't really know where this came from. Until we can find more information, we can't verify if it's a legitimate variant or a prototype. Still, I'm willing to add it to my list and at least add a special not that it's not officially counted until more details are found but, variant hunters should keep a sharp eye out for this one. If this had limited run and considering that none of use have ever seen or heard about it, it likely is the absolute rarest, legitimate cart for the GB.
Kudos to jvoss and I too would have snatched it up the moment I saw it. For I sake, I hope you have something really special, but for the sake of my collection I hope it's just a proto. Regardless, let's all agree to not let this break on Kotaku that it's a rare variant until the 3-5 of use hunting for this thing have our copies.
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