Metallicube on 21 June 2012
Hmm, almost every Gamecube game not named Super Smash Brothers and Metroid Prime is underrated, since the console itself is underrated. Some notable ones:
Eternal Darkness
Tales of Symphonia
Donkey Konga
DK Jungle Beat
Super Monkey Ball
Soul Calibur 2
F-zero GX
Resident Evil
Sonic Adventure 2 Battle
Phantasy Star Online (ironically very fun offline)
