Munchkin 3 - Clerical Errors is a supplement to Munchkin; you will need the original game to play.

Munchkin 3 - Clerical Errors has 112 more cards for the best-selling game of killing monsters and taking their stuff. Play a new race: Gnomes! Try on the Bard class. Face the Tequila Mockingbird, the Bad Ass, and the dreaded Auntie Paladin! Equip yourself with amazing items like the Chainmail Bikini and the Stab-A-Matic... and show them who's the mightiest, munchkinest dungeon delver of them all.