When a tenant or intruder approaches a trap, the player may trap them by arming and then activating the trap. Trapping a tenant sometimes has no real consequences, but often results in a game over. If the player does not trap a solid majority of intruders as they appear, the game ends. Also, while most intruders do no particular harm when they appear, the player must trap any enemies who try to shut off the building's power, disconnect the phone lines, or attack the tenants. If an enemy succeeds in any one of those three things, the game immediately ends.