Sonic & All-Stars Racing Transformed

[Garamonde]

When a single-player game has multiple characters to play as, it actually gives me a real reason (other than replaying it just because of course) to play through a game I enjoyed again.
It's also fun because the character usually has their own unique abilities (for example in the MMX games I prefer Zero's fast and close sword-slashing playstyle, it feels more nimble and free, and that kind of attack style is actually better suited for some bosses), so yeah as Dazz said that's fun too.