A great combination of zombie shooting and 'match-three' puzzling with an atmospheric (and bloody!) horror theme. Match up and pop the monster heads before they reach the barricade and use grenades to get out of a tight spot. Killheads has thirteen levels of relentless head-popping action to complete.
Aim the cannon using the MOUSE. Use the LEFT MOUSE BUTTON to fire heads.
Match three heads in a row to pop them.
Aim within a crowd of heads to use a grenade (indicated with a large cross-shaped cursor).