Get ready for a massively frightful experience. It all begins when a seemingly harmless series of scientific experiments goes awry and transports you to the world ruled by the Sentinel. Now, everywhere you go the Sentinel looms above you, and it's up to you to absorb his presence (which is as difficult as it sounds) and get home. The action is spread out over 650 levels of terror, and none other than John Carpenter composed the soundtrack.