Ketzal's Corridors known in PAL regions as SpeedThru: Potzol's Puzzle and in Japan as Shisso Surinuke Anatosu (?????? ?????) is a puzzle video game developed by Keys Factory and published by Nintendo. It was released on the Nintendo 3DS via the Nintendo eShop. The game is a follow-up to Keys Factory's ThruSpace released on WiiWare in 2010. The game is described as a "third-person on-rails Tetris" with the player having to move a 3-4 block shape attempting to get through each hole without missing and using a variety of strategic movements to the block to progress efficiently through the level. The setting of the game is based on the Aztec the ethnic groups of central Mexico that lived during the 14th–16th centuries.