Crabs in a Bucket: Shrimpocalypse is the first expansion to the base game, and features ten new Jokers, a special new suit called the Seabunnies, and an entirely new card type called the Four Horsemen of the Shrimpocalypse. In this variant of the game, players are trying to stop their opponents from reaching zero cards while simultaneously trying to stop opponents from winning the game by triggering the Shrimpocalypse. Each player is capable of playing one of the Four Horsemen of the Shrimpocalypse, to advance the game state towards an abrupt conclusion as the player to play the final shrimp in order wins the game through Shrimpocalypse. Use the powers of the Jokers and Seabunnies to stop them!

—description from the publisher