Stalingrad is a mod for the video game Totally Accurate Battle Simulator. It revolves around two teams, red and blue, which fight to the death. It is a battle simulator, and you can place units on either soldiers in Sandbox, or place units on one side and fight against a pre-generated army in Campaign. There are many different factions throughout history, and you can make your own units, factions, and campaigns, and post them online for people to try out. It can be found on Steam. As for the Stalingrad mod, it adds new units and factions beyond the limitations of the Unit Creator, with new models, unique abilities, and a goal to fit in with the vanilla game. It also expands existing factions, bringing them up to 14 units.