Ultimate Mortal Kombat 3 is a non public 8-bit demake of Mortal Kombat 3 for the Game Boy Color by PSC. This project is in private beta since ages, but it still comes along. The project is non commercial and non profit.

Quote from Twitter:

If you guys would like to play a version of the beta with more characters (Jax, Kung Lao, SubZero), just email me: z80artist(at)mail(dot)com It’s a bit glitchy, but may be fun while waiting for the upcoming major update.

https://twitter.com/PortableMK