The Maus is the heaviest tank ever built and was built by Germany during World War II. It never made it past the prototype stage, and the only surviving example of the two is now in the Kubinka Tank Museum.
This mod brings the larger and slower Maus into the game with a larger main gun and a smaller 75mm coaxial gun (faster reload, but less damage).
It has a multi-livery option, but by default it comes with only one livery for now (you can add others if you want).