Munchkin

You and your friends compete to kill monsters and grab magic items. And what magic items. Don the Horny Helmet and the Boots of Butt Kicking.

Wield the Staff of Napalm or maybe the Chainsaw of Bloody Dismemberment. Start by slaughtering the Potted Plant and the Drooling Slime, and work your way up to the Plutonium Dragon. Everyone begins the game as a Level 1 Human with NO Class (heh-heh) and via cards, they acquire Races (Elf, Dwarf, etc.), Classes (Thief, Wizard, Cleric, etc.), Items, Armor, Potions, and more to combat hideous monsters like the Level 4 Undead Horse, the Level 10 Net Troll, and the Level 14 Unspeakably Awful, Indescribable Horror (very nasty, indeed). The object of the game is to reach Level 10. Levels are acquired via the slaying of monsters and the selling of acquired treasure (1,000 Gold Pieces equals 1 Level). Very silly and a lot of fun!