I just noticed that usbloader gx has an option for widescreen for Gamecube games, and it seems to work. I tested it in Mario and the screen is wide and nothing look stretched. I don't know if it is stretching the world, or showing more pixels or what, but it seems to work really well for Sunshine. So is there a list of compatibility for widescreen hack for Gamecube games? EDIT: I found this force 480p mode compatibility list, but it isn't for widescreen hack compatibility. I guess I should get busy testing and add these things to the list myself.