Things You'll Need
Instructions
Download the .ISO file for the Gamecube game you want to burn. There are many websites and services that carry these files, but finding them is up to you.
Insert a blank DVD-R disk into your DVD-R burner on your computer.
Boot Alcohol 120%. If you do not have that program, download a trial from AlcoholSoft's website (see resources).
Click "Image Burning Wizard" from the list of options on the left-hand menu in the Alcohol 120% screen. This will open a new window that will ask you to select your file. Select your .ISO file and click "Next."
Check the settings for the burn and click "Start" to begin the .ISO burn. Once complete, the game will be burned onto your DVD-R disk.