I'll cut to the chase: I'm offering up this unreleased game and I am absolutely going to sell it by next week. The game appears to be complete, is as far as I know the only copy known, and is definitely a fun little game.
I'm looking at all offers, and the first one I like, I'm going to take. I have a standing offer of $400 from one member and another party interested at $500, so please keep those numbers in mind before sending an offer.
Game Gear protos are uncommon to begin with, and unless you're talking about Frogger, protos of unreleased Game Gear games are damn near impossible to find. This thing is 100% going to be sold by next week, so if you want it, don't wait or you just may regret it.
Thanks for checking this out, if you have any questions do not hesitate to ask!