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O.T.T.O Hut5
"Home and charging dock for Master Builder's latest invention! Once fully upgraded, O.T.T.O becomes an additional builder in Builder Base and enables the Master Builder to freely travel between the two villages!"

O.T.T.O Hut1 O.T.T.O Hut2 O.T.T.O Hut3 O.T.T.O Hut4 O.T.T.O Hut5
Level 1 Level 2 Level 3 Level 4 Level 5

  • Summary
    • The O.T.T.O Hut is a building unlocked at Builder Hall level 9.
    • The O.T.T.O Hut does nothing when initially built, and will only serve as a distraction defensive-wise then. However, it houses the O.T.T.O which can only become active when the O.T.T.O Hut is upgraded to level 5.
    • Upgrading the O.T.T.O Hut does not take time or resources, but instead a certain prerequisite must be completed (and the Master Builder must also be available to upgrade the building). To upgrade the O.T.T.O Hut to level 5, four such prerequisites must be satisfied.
    • Once the O.T.T.O Hut is upgraded to level 5, O.T.T.O is activated and functions as an additional builder in the Builder Base. The Master Builder can then freely travel between the Home Village and Builder Base as the player so chooses, whenever he is not working on a building, and can function as an extra Builder in either base as long as you have the Master Builder's Hut built in the Home Village.

  • Trivia
    • Since the level 2 O.T.T.O Hut requires gearing up all 3 buildings currently available to be geared up, the upgrade effectively requires players to have Town Hall level 10 or above, since the Mortar gear up requires the Mortar to be level 8 (which requires TH10).

  • Icon Descriptions
    Icon InfoTapping this icon displays information about the O.T.T.O Hut, such as Hitpoints and information regarding the tasks needed to upgrade the Hut.
    Icon UpgradeTapping this icon also opens up the information screen, and allows the O.T.T.O Hut to be upgraded to the next level, if you have completed the relevant task and if the Master Builder is free. When the O.T.T.O Hut is at maximum level, this icon is not shown.
    PlaceholderTapping this icon moves the Master Builder to the Home Village. This icon is only shown when the O.T.T.O Hut is at maximum level and the Master Builder's Hut has been placed in the Home Village.
    PlaceholderTapping this icon informs you that the Master Builder is already in the Home Village, or that the Master Builder's Hut has not been placed. This icon is only shown when the O.T.T.O Hut is at maximum level.
Builder Hall Level 1 2 3 4 5 6 7 8 9
Number Available 0 0 0 0 0 0 0 0 1
Size Size
2x2
Hitpoints Hitpoint Build Cost GoldB Build Time Stopwatch
250 100,000 None
Upgrade Requirements
Level 2 Gear Up all 3 buildings: Cannon, Archer Tower, Mortar
Level 3 Upgrade Cannon Cart to level 18
Level 4 Upgrade Mega Tesla to level 9
Level 5 Upgrade Battle Machine to level 30
Builder Base Buildings
Defensive Buildings CannonDouble CannonArcher TowerHidden TeslaFirecrackersCrusherGuard PostAir BombsMulti MortarRoasterGiant CannonMega TeslaLava LauncherWalls
Traps: Push TrapSpring TrapMineMega Mine
Resource Buildings Builder Hall (Magic Items) • Gold MineElixir CollectorGold StorageElixir StorageGem MineO.T.T.O Hut
Army Buildings Builder BarracksArmy CampStar LaboratoryBattle Machine Altar
Other Buildings BoatDecorationsObstaclesClock Tower
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