As the escalation between German and Russian engineers reached a new point with the introduction on the German side of the Panther and Tiger, and the knowledge that something bigger was brewing, the IS-2 was pressed into introduction as soon as its main armament was ready. With a partly sloped frontal armor, 120 mm (4.72 in) thick and, moreover, a new massive 122 mm (4.8 in) main gun, the new heavy tank seemed to be just the trump card Stalin needed to wash over any armored opposition on the Eastern Front. Or so it seemed on paper. In reality, some shortcuts were taken to meet the expectations. These would prove real issues on the long run, starting with the gun itself, slow to reload and with bulky two-piece naval ammunition.
A version of the IS-2 was experimentally built in the summer of 1944. It was a radical departure from the series, with the transmission and fighting compartments relocated to the rear, the engine in the center and driver and radio at the front. The chassis was reworked with a new drivetrain comprising larger doubled roadwheels and no return rollers. In the meantime, new prototypes were conceived, the IS-3, IS-4 and IS-5, which all had design flaws and saw limited production. Consequently, the confidence given to the battle-tested IS-2 by the supreme command of the Red Army was to push an extensive set of postwar modifications, first ratified in 1954 and applied in 1957, known as the upgraded “IS-2M”
Dimensions:

Hull length: 6.6m - 9.9m with gun
Width: 3.09m
Height: 2.73m


Ingame:

Hull length: 10 blocks - 15 blocks with gun
Width: 5 blocks
Height: 4 blocks
Scale: 1.5:1