If you don't know about it, I'll sum it up for you: Capcom originally was going to have the first Resident Evil ported over to the Game Boy Color, but the project was cancelled in 2000, despite being nearly complete.
Anyways, someone at Assembler recently held a fundraiser to buy a prototype cart from a private collector, so he could release the ROM to the public. He's already raised the money, and he got the cart. (and another one that's apparently an older build) If you wanna check it out: http://www.assemblergames.com/forums/sh ... hp?t=36392