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 * Mario Super Sluggers (pictured) was never released in Europe and Australia, even after the Wii Nintendo Selects re-release.
 * In Paper Mario: The Thousand-Year Door, if Mario sleeps in the Inns 50 times, a Cameraman Lakitu will appear to congratulate him and give him 200 coins.
 * In Captain Toad: Treasure Tracker, if the player spins the control stick too quickly, Captain Toad or Toadette will get dizzy and fall over. If any enemy comes in contact with them as they are getting dizzy, then the enemy will be defeated.
 * Super Mario Sunshine contains a test level which can accessed with an Action Replay. The level features various unused elements, and its texture is mostly numbered, checkered tiles.