I think this update will be helpful!

Cloak mode & the Ghost Land: When Cloak mode is activated, the tank's outer surface alters through the use of a crystalline generation, capable of fully absorbing or bending incoming wave spectrums such as visible light, radiowaves (Radar), Infrared (Thermal Imaging), and possibly microwaves or others, to render itself completely invisible to the human eye and most surveillance equipment. During this time, the tank is enveloped within a clear "shimmer" as light is bent around the surface causing invisibility. Cloak mode makes your tank invisible for ten seconds at a time (well, not completely invisible, only transparent, and the outlines are detectable) because using the cloak mode consumes huge amount of energy, therefore it takes another ten seconds to replenish the energy during which the tank becomes visible. Also, if any other tank fires upon you, it reveals faint, purplish arcs of electricity across the shimmering surface of your tank. It can be used by any tank, irrespective of turrets, hulls or paints. In normal gameplay, the cloak mode will be effective for only thirty minutes (of gameplay) within 24 hours, so that it doesn’t give a huge amount of unfair advantage to any player. However, there will be an arena where everyone can use this mode for all the day. It is called the Ghost Land, entering which automatically switches your tank to cloak mode (provided you have already purchased it). Here it is always night, with a ghostly and stormy appearance. Every 5 to 6 seconds there is a thunder which momentarily reveals the position of the even invisible tanks. The arena itself is not large, to reduce the unfair advantage of weapons like shaft and railgun (believe me, those are annoying in large maps, killing me every time when I’m running to reach them). The game is challenging here, and so the reward (crystals and exp), which is twice the normal gameplay at any map. This is not an arena for the weak of hearts, as tall ghostly shadows also roam the place, suddenly appearing in the thunder light before your tank, scaring and distracting all the tankers randomly, because it’s their place, the Ghost Land!