From the Dolphin homepage:
Dolphin is a Gamecube and Wii emulator. Most games run perfectly or with minor bugs. Games are playable at HD quality, with 1080p and more. This is a remarkable feature the actual Gamecube and Wii consoles are not capable of.
Wiki Page (includes game compatibility info): http://wiki.dolphin-emu.org/index.php?title=Main_Page
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