The alternate late 1960s runs decades after a World War II that ended differently. The Soviet Union stands as the world's dominant superpower. You have been sealed inside an isolated space — your only external contact a one-way radio. Equipped with a hazmat suit, gas mask, flashlight, and a backpack you have been instructed not to open, your mission is to infiltrate the hallway ahead. The layout is procedurally generated every playthrough, ensuring no two runs are the same. Interact with what you find, learn how the environment and its occupant behave, and whatever else you do: do not look back.