YMMV / Fluxx

  • Game-Breaker: Batman Fluxx has the Batmobile and Batarang Keepers; the Batmobile can be discarded from play to take an extra turn, and the Batarang can be returned to your hand to put a card from the discard pile on top of the deck. If you get both at once, no one else will ever get a turn again.
  • Spiritual Licensee: As mentioned in the Laconic Wiki page, it's the closest we can get to a tabletop version of Calvin Ball.