As you make your way through an underground megastructure, you fall into an area with a long-lasting power outage. Your only way forward is to find a path towards the elevator, in the surrounding darkness, which will lead you to a higher level. Hopefully leading out of this place. Tread the pitch black corridors of the structure, and try to find your way out. GAMEPLAYUse various devices at your disposal, to illuminate the darkness. Use the torch to illuminate your close surroundingsThrow flares to create a mobile source of lightPlace beacons to mark your way Find the elevator and use it to travel from one floor to another. Solve problems preventing your journey, and continue onwards. COLLECTIBLESSome levels contain collectible upgrades for the player characters.