T-81 also known as "killer crab" is a tank that came out in 1981 and it was made to replace the T-59 tank. it was made to compete with a tank another company was producing, but the goverment decided to accept both projects. this model of the T-81 is a modernized version.

equipped with a auto loading, stabilized 120 smoothbore cannon the main ammunition of the tank is heatfs but it can also fire apds and HE rounds aswell
with the auto loader the tank has a reload speed of about 5-8 seconds

as for protection, the T-81 has ERA, IR dazzlers and an early APS system

now the tank has some downsides, for example the engine is pretty weak and the auto loader is not very well protected so the ammo tends to explode when it takes a hit and it usually ends up turning the crew into well done steak when it does.
The suspension tends to breakdown regulary and cheaply made

Controls:
Pitch-drive forwards and backwards
Roll-turn the tank (cant turn on high speeds)
Yaw-turn the turret
Slider 1-move the cannon
AG 1-engine and other systems
!!WARNINGS!!
Make sure the physics are set to ultra or high(not recommended)

notes
this tank took way too long and i had to take a short break so i do not exactly know what i missed and there has to be some things wrong or missing, sorry. Also the "killer crab" comes from people saying it looks like a crab on discord lmao