Everyone is put into a giant pitch black room with guns. Fill it with obstacles, make traps that emit light/sound, and make the guns give off bursts of light when fired. Now, everyone is trying to navigate a room filled with traps, obstacles, and unseen enemies.
Really, anything where players are forced to stay quiet while something is hunting them will make people tense. Admittedly, the storygame aspect somewhat undermines the overall point, but I'm sure there is a way to make it work.