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 * In the final level of World 9 in Super Mario Bros.: The Lost Levels, a group of tile blocks (pictured) appear spelling out "アリガトウ！" (Arigato!, meaning "Thank You" in Japanese).
 * Hooktail was intended to appear in Minecraft as the Ender Dragon but was replaced by Gobblegut in the final version.
 * When The Super Mario Bros. Super Show! aired in Korea, the live-action segments were replaced and played by Korean actors.
 * Double Mario from Super Mario 3D World was actually the result of a mistake made by a staff member with the placement tool, which created two player Marios. The staff thought it was a good idea and decided to include it in the game.