Undercover: Operation Wintersun
Let's set the scene: It is 1943 in Nazi Germany. You are Dr. John Russell, a nuclear physicist turned spy for England's MI6. Your mission? To keep Germany from making the world's first atomic bomb (A role set for America to use on Japan in 1945). The game is heavily character-driven, much like a novel.
Look for it coming soon to PC at the end of the month and hopefully on 360 a little while later.