Serious Sam HD First & Second Encounter is a first person shooter with attitude. Serious Sam offers traditional style first person shooting but with a new take on this familiar formula.

Closed-in corridors are mostly replaced with wide-open environments, small groups of enemies are replaced by dozens attacking at any given time.

Ammunition and weapons are plentiful, and guns, for the most part, do not need to be reloaded. Enemy designs often take inspiration from mythology and fantasy, and include anything from flying harpies, to giant bipedal cybernetic monsters, to headless suicide-bombers.