Quantum Theory is a third-person shooter. The game centers on two characters named Syd and Filena who must fight through a "living tower". The game is a third-person shooter incorporating a cover system. Players can fire their weapon from the hip, aim down the weapon sight for precision, or blindfire from cover. Enemies explode upon death and a successful headshot is rewarded by a slow motion close up view of the head exploding. Syd can throw Filena as a projectile weapon. (wikipedia.org)