Munchkin is a competitive game from Steve Jackson (co-founder of Games Workshop). Its a classic parody of the D&D game, without the complexity! with a cards like the “duck of doom” and the motto “Time To kill the monsters, Steal the treasure and stab your buddy.”
Star Fluxx is an amazing game where the rules of the game are defined by the game as you play. Easy to get started and a lot of fun. This particular version offers an amusing parody of the sci-fi world.