Only certain games. Games I've tested that do work for GameCube: Twilight Princess, Metroid Prime. Doesn't work: Wind Waker. Tried several different copies of it. There seems to be an error at the end of a log file I found in the system directory. I'm not able to access it ATM. I want to say it ended with a -1. With PSX games that are working: Crash Team Racing, Spyro. Klonoa, Breath of Fire 4 crash. Dreamcast, Crazy Taxi and Sonic Adventure work, while Skies of Arcadia, Grandia 2, Jet Grind Radio crash. N64, GoldenEye, Paper Mario work, Banjo Kazooie, Mario 64, Ocarina of Time crash.