Dolphin is a Gamecube, Wii and Triforce (the arcade machine based on the Gamecube) emulator which supports many extra features and abilities not present on the original consoles. Gamecube and Wii compatibility is okay - one can expect "mainstream" titles to be running in some form or another; lesser known titles can be hit or miss. Triforce compatibility is currently limited to one game - others require more of the Triforce-specific peripheral devices to be emulated. Check (and update!) the Compatibility Wiki for more specific information. http://wiki.dolphin-emu.org/