Critical Mass is an unity 3d shooting game where enemies are coming from all sides. You are alone and you must protect yourself as long as you can. Use a machine gun and eliminate enemies as much as possible. Avoid enemy fire and survive.
To play Critical Mass, Beidh tú ag úsáid W,A,S,Eochracha D a bhogadh, left click mouse button to fire with machine gun, right click mouse button to fire with rockets, Ctrl key to aim at cursor, Shift eochair a reáchtáil, numeric key 1 to activate the AC-130 and SPACE bar to jump.