Project Origin is more action oriented than the original F.E.A.R. Tight interior spaces bring back the tension of the first game, while large outdoor levels and mech suit combat aim directly for fast-paced, heart-pounding battle. However, as in the original F.E.A.R., a central feature in Project Origin is the ability to use the main character's enhanced reflexes to effectively slow time, for a "bullet-time"-like effect in combat and other action events. Another game feature is interactive environments that allow players to move and alter obstacles in order to clear a path or create cover, adding to the tactical possibilities for both sides in the fight. Throughout single-player adventure, scripted sequences, and dynamic combat put forth a stream of violent, fast-paced first-person shooter action, punctuated with a mix of sniping, exploration, puzzle solving, and story development.