ICE - Classic Retro Console Emulation Through Steam

Emulated Consoles/Systems : NES, SNES, N64. GameCube, PS1, PS2, Genesis, Gameboy, GBA. Wii, Dreamcast, and DS ( LATER )
Developer Quote : Use Steam to play all your old Console Rom game files via Steam's Big Picture mode
Release Update : Great news for us Retro gamers as a new company is set to take the Emulation side of things by storm. ICE is a new piece of Emulation software that will enable you to play classic games via Steam's Big Picture. All you have to do is run the software, let it make a rom folder, place your Rom files in that folder and then use ICE to pick your game of choice, what's more it comes pre-configured for your XBOX 360 controller! Hopefully they wont get a cease and desist order as it's a grey area with Rom files and they continue to update it.

Website : http://scottrice.github.io/Ice/

Thanks BluesNews for the update!