Heres a few GameCube icon and banners that i did with gemliu templates
https://gbatemp.net/threads/banners-alternative-nes-snes-n64-gamecube-wii-banners-and-icons-for-wii-u.522359/
Heres a list of games he has done on his post
F-Zero GX
Kirby Air Ride
Metroid Prime
Mario Party 4, 5, 6
Mario...