There is no 'why', there is just Science... and death rays! Applied Science is a class-based FPS designed around mad scientists and their zany experiments. Choose from an Atomic Physicist that can deploy a bullet-halting time field, A chemist with a poisonous gas problem or a Particle Physicist with a disposition for teleporting.
Looks like unreal tournament. Same guns, still fun though. Would like some more unique guns, the maps look decent though. The wild entagled plants crossed with the buildings is nice, but unoriginal.