This is an enhanced remake of the 2001 first-person shooter Halo: Combat Evolved. Players assume the role of Master Chief, a super-soldier who engages in futuristic battles against a powerful alien alliance. Players use plasma pistols, sniper rifles, machine guns, and rocket launchers to kill enemy creatures in frenetic combat. Firefights are accompanied by realistic gunfire, large explosions, and cries of pain. Frequent blood-splatter effects occur when enemies are shot, sometimes staining the surrounding environment; aliens often break into bloody fragments when killed.