The GC-Backuplauncher by WiiGator is similar to the Wii-Backuplauncher.
It should run your GC-Backups without the need for a modchip.
It does that by modifying the MIOS of you Wii so it enables DVD-read and the backup feature.
Installation instrunctions are in the File, dont be afraid, you don't have to compile anything just open the gcbackup0.1_theta folder or extract the same named rar to obtain what you want ;)
know this is not a game, but thought this is where it will be noticed more