For different series for example
Sonic- Sonic adventure 2 battle - i loved battling my cousin and playing this awesome story line getting upgrades that help my character
Mario - Mario Sunshine - This game all the way! I loved replaying it and the amount of different stages was crazy. Nostalgia much
Kirby - Kirby and the Amazing Mirror - I remember playing it over and over because at the time my cousin kept deleting my save, but it was worth it.
Ty The Tasmanian Tiger - This game was just amazing with all the different boomerangs. I couldnt get enough of it.