SpongeBob SquarePants Fluxx

From BoardGameGeek:

You probably already know who lives in a pineapple under the sea, but now you can join the whole Bikini Bottom gang in SpongeBob SquarePants Fluxx, an undersea version of Fluxx! You can steal Mr. Krab's Money or Squidward's Clarinet, and give a Krabby Patty to Plankton; you can even drive off in the Invisible Boatmobile! If nautical nonsense be something you wish, you don't have to use your imaaaagination - just play Fluxx like a fish! Fluxx is a game about change. It begins simply with a couple of core rules, then gradually becomes more complex as cards are played that change the rules. Even how you win will be constantly shifting, so you're never sure who will win until someone does. With the perfect blend of luck and strategy, every game is different!