The IS-2 model 1944 is the late-generation second variant of the IS heavy tank family. It features a uniformly sloped 100 mm hull upper front glacis plate at a 60° angle. Reliability was improved over time as well: the earliest IS-2s were only guaranteed for a 1,000 km distance before breakdowns; by late 1944, however, the commander of the 1st Belorussian Front stated that "the heavy tanks worked well and exceeded the warranty period by 1.5 to 2 times, both in hours usage and kilometres." As a light defence against hostile aircraft, a 12.7 mm DShK heavy machine gun is installed on the turret roof near the commander cupola. Some sources claim that 1,150 units were constructed before May 1945 when the IS-2 was discontinued in favour of the much better IS-3.

Introduced in the Closed Beta Test for Ground Forces before Update 1.41, the IS-2 model 1944 provides improved protection compared to the early-generation IS-2. Shells have a better likelihood of ricocheting off a uniformly sloped hull front armour plate than of successfully penetrating it. The main armament remains the 122 mm D-25T tank gun, capable of destroying any enemy ground vehicle in a single shot. Since reload speed remains on the slower side, it is critical to make every shot count. Given its respectable reverse speed, it is possible to play in "reverse" mode with the back of the hull facing the adversary, which can greatly boost survival during battle. Additional metal meshes can be researched as an add-on armour modification to improve protection against some high-explosive anti-tank (HEAT) rounds.