IMPORTANT: If you are ordering a Start-Up Disc, make sure it matches the region of your GameCube.

The GameBoy Player has been inspected, tested, and cleaned. The original region of the GameBoy Player may vary, but this does not affect compatibility. Any GameBoy Player will work with any GameBoy cartridges, Start-Up Disc, or GameCube system, regardless of region—just make sure the Start-Up Disc matches the region of your GameCube.

If you have a Japanese-North American region switch modded GameCube: you can use either Start-Up Disc as long as the GameCube is booted to the corresponding region.