From publisher blurb:
What if the Second World War didn’t end the way it did? What if the Axis forces had atomic weapons?
What if they used them in the dying days of the war?
The 13th Year is a campaign setting for the To The Stars, Stellar Cadets! core rulebook, set in an alternative reality. Hitler never died and actually developed his own atomic weapons. Not only that, but he used them on the world in an insane attempt to claim victory over his enemies. The survivors just want to survive, the military want to finish a war because they have no other purpose left in life.
It's 1952, 13 years after the beginning of the Second World War, in a period when decimated governments are trying to claw their way back to power and old enemies resurface once again. Armies are on the move and the war continues, the sides pretty much carrying on from where they’d left off in 1945. It’s the Second World War set against a post-atomic holocaust wasteland.