Les morts aux trousses

You (and your friends) are surrounded by an army of zombies. Uncle Sal's house is not far away, and he has a bunker that was built in the cellar during the nuclear war paranoia of the '50s. The key to the bunker is somewhere in this 3-level house... and the bunker is small... very small! In fact, just a single person can be supported by the bunker facilities! Will you be the supported one... or the eaten one?!