GameCube & Wii is too demanding for in-browser play, so it runs through Dolphin — a free, open-source desktop emulator. Here's the whole setup.
Use the button above — it always grabs the current Windows build. Format: Installer (.exe).
Run the installer from dolphin-emu.org.
Dolphin loads these file types: .iso.rvz.wbfs.gcm. We don't provide games — use discs/cartridges you own and dump them yourself.
BIOS: No BIOS needed for most games.
Open Dolphin, click Open, and pick your game.
Keyboard works; a gamepad is best (Wii titles need Wiimote emulation — see the guide).