Clash of Clans Wiki
Clash of Clans Wiki
For a similar defense in the Clan Capital, see Hidden Mega Tesla.
Mega Tesla10

"What happens when a Tesla goes Mega? Its powerful jolts deal heavy damage to even the toughest units!"

Mega Tesla1
Level 1
Mega Tesla2
Level 2
Mega Tesla3
Level 3
Mega Tesla4
Level 4
Mega Tesla5
Level 5
Mega Tesla6
Level 6
Mega Tesla7
Level 7
Mega Tesla8
Level 8
Mega Tesla9
Level 9
Mega Tesla10
Level 10


  • The Mega Tesla is a defensive building in the Builder Base that is unlocked at Builder Hall level 8. The Mega Tesla attacks with chain lightning; the electricity it fires damages a first target within the range of the Tesla, and then, if possible, the bolt will arc towards a second target up to 3 tiles away from the first target and hit for 60% of the damage.
  • Before the Builder Base 2.0 Update, upgrading the Mega Tesla to level 9 was a requirement to upgrade the O.T.T.O Hut to level 4.


Defensive Strategy

  • The Mega Tesla deals high damage, but has a low fire rate and can only hit up to two targets per attack. It is therefore most specialized at attacking troops that are relatively low in numbers, such as Baby Dragons, Cannon Carts and Hog Gliders, while troops that have strength in numbers or can swarm the Mega Tesla with its spawns, such as Raged Barbarians or Night Witches, will have less trouble with the Mega Tesla.
  • Because of the aforementioned weakness against swarms, it is good to protect the Mega Tesla using splash-damaging defenses and traps, such as the Roaster, Crusher, and Mega Mines, to prevent enemies from distracting it with lower-hitpoint troops.
  • Among defenses of equal level, the Mega Tesla does the second-most damage of any defense in the Builder Base, behind the Crusher. With the ability to target air and ground as well as good range, Mega Tesla can be quite versatile at times. As mentioned before, a Crusher can capitalize on this even further by deterring enemy ground swarms from it.
  • The Mega Tesla can hit Sneaky Archers with its chain effect, if there is another valid target nearby for it to fire upon.

Offensive Strategy

  • As mentioned previously, the Mega Tesla is extremely weak against swarms, so Raged Barbarians can have an advantage since it would only be able to take out two at a time.
  • Drop Ships can tank several shots from the Mega Tesla and drop Skeletons to distract it and potentially deal damage (though minor).

Upgrade Differences

  • The Mega Tesla undergoes significant visual changes at level 4, 5, 6, 7 and 8.
    • When initially constructed, it is composed of a pyramid-type building with a golden tip, and multiple wooden supports.
    • At level 2, the Mega Tesla gains a stone base and smaller beams in between the supports.
    • At level 3, all ropes disappear and are replaced with wooden beams.
    • At level 4, the electricity coils turn blue, and a diagonal beam replaces the other ones on the right side. It gains a stone base and the stone supports is perfectly fixed and stabled.
    • At level 5, a metal base is put on top of the original stone supports and the stone supports change into stairs.
    • At level 6, there are metal crosses replacing the wooden beams.
    • At level 7, the Mega Tesla gains blue supports at the top of the golden tip.
    • At level 8, the blue supports turn golden, and the golden tip is encased by a glowing Tesla coil.
    • At level 9, the base of the cross turns golden and the center of the cross gains a golden clasp.
    • At level 10, the golden tip is replaced with an octagonal-shaped dome with a large screw on top fastening it into place. The Tesla coils are now all the same size, and contained within them is a blue glowing interior. Gold plating is added along the corners on top of the support beams.


Number Available Builder Hall Level
1 2 3 4 5 6 7 8 9 10
Total 0 0 0 0 0 0 0 1 1 1
Size Size
Damage per Second
Damage per Shot
Build Cost
Builder Gold
Build Time
Experience Gained
Builder Hall Level Required
Builder Hall
1 95 380 700 3,000,000 2d 415 8
2 104 416 800 3,100,000 3d 509 8
3 115 460 950 3,200,000 4d 587 8
4 126 504 1,100 3,300,000 5d 657 8
5 139 556 1,300 3,400,000 6d 720 8
6 153 612 1,500 3,600,000 7d 777 8
7 168 672 1,700 3,800,000 8d 831 8
8 185 740 1,900 4,000,000 10d 929 8
9 204 816 2,150 4,800,000 11d 974 9
10 224 896 2,400 5,800,000 12d 1,018 10
Range Attack Speed Damage Type Unit Type Targeted Favorite Target
7.5 tiles 4s Chain Lightning Ground & Air Any

Icon Descriptions

Icon InfoTapping this icon displays information about the Mega Tesla, such as Level, Damage Per Second, Hitpoints, Range, Damage Type and Targets.
Icon UpgradeTapping this icon begins upgrading the Mega Tesla to the next level, if you have enough resources and a free Master Builder or O.T.T.O. When the Mega Tesla is at maximum level, this icon is not shown.
Icon HoBTapping this icon instantly upgrades the Mega Tesla to the next level, at the cost of one Hammer of Building if you have one. When the Mega Tesla is at maximum level, or the Builder Hall requirements for the next level are not met, this icon is not shown.
Icon FinishNowTapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of the displayed number of Gems.
Icon FinishNowBoBTapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of one Book of Building. This icon is only shown if you have at least one Book of Building.
Icon FinishNowBoETapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of one Book of Everything. This icon is only shown if you have at least one Book of Everything but do not have a Book of Building.
Icon CancelTapping this icon, which is displayed only while an upgrade is in progress, cancels the current upgrade and refunds half of the upgrade cost.


  • The Tesla coil on top of the Mega Tesla at level 8 resembles the Tesla coil on the Sparky from Clash Royale, another game created by Supercell. That same coil also appears on the level 7 Laboratory and level 7 Hidden Tesla.
  • The description of the Mega Tesla contains a grammatical error, stating "It's powerful jolts..." instead of "Its powerful jolts...".
  • Unlike Hidden Teslas from both villages and the Giga Tesla, the Mega Tesla doesn't remain hidden or get triggered for it to be revealed.
  • The Mega Tesla can be seen in the 9th Clashiversary loading screen, despite taking place in the Home Village.
    • It is the first and only defensive building in Builder Base to ever appear in a loading screen.
Builder Base Buildings
Defensive Buildings CannonDouble CannonArcher TowerHidden TeslaFirecrackersCrusherGuard PostAir BombsMulti MortarO.T.T.O's Outpost (Zappy) • RoasterGiant CannonMega TeslaLava LauncherX-BowWalls
Traps: Push TrapSpring TrapMineMega Mine
Resource Buildings Builder Hall (Magic Items) • Gold MineElixir CollectorGold StorageElixir StorageGem MineB.O.B Control
Army Buildings Builder BarracksArmy CampStar LaboratoryBattle Machine AltarReinforcement CampHealing HutBattle Copter Altar
Other Buildings BoatDecorationsObstaclesClock TowerElixir Cart