TweakTown writes about Project Unity, a mod that combines 15 old gaming consoles into a single gaming box! The device uses a single power supply, one video output and a custom-made controller.
Project Unity includes Sega Master System, Neo Geo MVS, GameCube, Dreamcast, Saturn, Intellivision, Colecovision, Atari 7800, Turbografx 16, PS1/PS2, Mega Drive, NES, Super NES, Game Boy Advance, Nintendo 64 and Amstrad GX4000 games. The console was made out of authentic hardware and doesn't use any emulators of combo units. It does all of this from a single power supply, video output and custom-built controller - no matter the system selected at the time.