I'd love 1C to make a game about the battle of Stalingrad that puts you in the shoes of a custom made character. From the moment you enter the game world that's it. Stalingrad would be an urban bombed out jungle with a full day and night cycle. 1 hour = 6 hours game time. To progress the time six hours you can sleep and your mission is to kill as many germans as possible after several months of game time. You get a final score depending on the types of target you hit.
Perhaps built off the death to spies engine?
