Koopa Quest!

Koopa Quest! is a game in the Mario Series. It is different than most games, as the main protagonist is a Koopa.

Plot:
A Koopa deserts Bowser's Army and becomes friends with Peach. One day, Peach is kidnapped by Bowser while Mario and Luigi are on a quest elsewhere. Koopa decides to be the hero and save Peach.

Reception:
The game received critical acclaim because it was an innovative and fresh spin on the Peach is kidnapped by Bowser, Mario saves her formula.