Hysteria is a challenging arcade game where a fanatical sect has summoned a primeval entity in our past. As the last survivor of the time corps, you have been chosen to combat this entity in three time zones: Ancient Greece, Dark Ages and Space.
The game requires skill and strategy as you move your time warrior through horizontal-scrolling parallax levels using the joystick. Your goal is to collect nine pieces that assemble to form the face of the primeval entity, which must be battled.
However, the locals in each time zone are hostile towards time warriors and will throw and fire everything at you. Fortunately, your energy conversion kit allows you to turn some shot objects and enemies into valuable weapons and armoury. You'll need all the help you can get as you navigate these treacherous levels.