Once the Hidden Teslas are revealed after 51% of building damage, it is often too late for the opponent to react, and troops may end up wasting time traveling to the Tesla. They are hidden and unless your opponent has deployed in the Tesla's corner or a prior attack has revealed the Teslas (which is possible in Clan Wars), they are unlikely to check the corners of your base for something hidden. A risky but effective strategy is to put the Hidden Teslas in the corners of your base without the Builder's Huts.The advantage of this play is that the extreme power and surprise can draw out spells and ruin the attacker's plan. This is best used either protected in the core of the base or off side near the trash buildings. Teslas combined to tons of damage, and their smaller size compared to other defenses groups troops together, maximizing the potential of them. A common but powerful strategy is to group up three or four Hidden Teslas together, along with traps (like a Spring Trap) in between, called a Tesla Farm.While it is possible to win trophies in this manner, a sufficiently prepared army will almost certainly be able to destroy the Town Hall. This will force them to use more troops to destroy or otherwise outlast the Teslas, leaving less available troops for other areas of the base. Players can place Hidden Teslas next to an exposed Town Hall as a means of deceiving enemies.Make sure to place your Hidden Tesla in a space where troops cannot be placed (an empty space no larger than 2x2), as unlike other defenses structures, Hidden Teslas do not expand your no-spawn zone, meaning that troops can be placed directly on top of a Hidden Tesla.Although a Hidden Tesla being upgraded loses the merit of being invisible, it still keeps the demerit of being unable to cause a no-spawn zone.
Combat this by relocating it during the upgrade period. Be cautious when upgrading the Hidden Tesla, as this will reveal its location to future attackers.You could create two empty 2x2 spaces in your base which are actually empty, while deploying your Hidden Teslas elsewhere, increasing the chances of surprising your opponent. For example, you unlock 2 Hidden Teslas at Town Hall 7. A good strategy is to create "dummy" 2x2 open spaces to make the enemy think they know where your Hidden Teslas are.Instead, try to make sure that there are a few different places where Hidden Teslas could be lurking. Unfortunately, many players design their villages such that it has only as many 2x2 open spaces within its layout as it has Hidden Teslas (and possibly Giant Bombs) available, which makes it obvious where they are located.A well-placed Hidden Tesla can wreak havoc on an attacker's offensive strategy. The main advantage of the Hidden Tesla is that it is a surprise.Placing a troop into the spawn hole will cause the Hidden Tesla to pop up and start attacking. The Hidden Tesla can have troops spawned on top of it if it's in a 2x2 square.Their aesthetics and mechanics trick some into believing that they are traps, but they're actually defensive buildings like Archer Towers. A Hidden Tesla has a seven tile range but a six tile trigger radius in which it will only pop up if a troop comes near it or the enemy has destroyed at least 51% of the base.Like traps, Hidden Teslas are only visible to the player and their clanmates.