The KV-220 is a premium gift Soviet heavy tank. It was introduced during Update 1.61 "Road to Glory" in the "Operation S.U.M.M.E.R." event of 2016 that lasted from 22 July to 22 August, unlocked after obtaining 36 tanker Marks of Distinction.

The KV-220 is played almost like the previous KV iterations in the Soviet heavy tank line-up. The great improvement over the predecessors is the improved all-around armour to 100 mm, meaning that the tank can angle its hull with more confidence without revealing a side weak point or the such. The great armour, decent mobility, and adequate gun gives the KV-220 a diverse role to play in, from a short-range brawler, a support tank, and a long-range sniper.

The KV-220 is quite a heavy tank of its own calibre. With 100 mm of armour all around the hull and turret, the angling of the hull can be done to maximize both front and side armour without worry of exposing weak points. Not to mention for its weight, the KV-220 is quite agile. While the 85 mm gun is powerful by its own remarks, it is inferior to the same 85 mm guns that are on the IS-1 and T-34-85, which share a similar BR as the KV-220. This is because the 85 mm on the IS and T-34 have access to the BR-365P APCR shell and the BR-365K APHE shell, which can limit the KV-220's versatility against different threats. Thus, the KV-220 provides a heavy tank with an impressive arrangement of armour with decent mobility and with a gun that perform extremely well against medium tanks of every kind like M4 Sherman and initial heavy tanks like Tiger 1 but may feel lacking in the battlefield against heavy tanks like M26 Pershing.

There is one frontal weak point on the KV-220, and that is the gun mantlet. Not that the gun mantlet area is easy to penetrate, but when in happens the cannon breech will be severely damaged and even some crew man can be knocked out, not to mention that in case of non penetration the round can penetrate the hull roof. This presents a shot trap able to be exploited by any gun to ricochet a round off that and into the hull roof, which is only 30 mm thick. Do note this when facing an enemy taking aim at the tank.