It's not even a real game. It's the product of 3D artist (and Sonic fan) Robert Medina. A stunning 2.5D recreation of Sonic & Knuckles' Mushroom Hill Zone. It's incredible. Heck, even SEGA thinks it's "awesome". Now imagine this, running on your PlayStation 3 with a 3DTV. Yeah, exactly.</em>

[source kotaku.com]