Quake 4

aliens cybernetics bloody mech health first person shooter fps death doctor futuristic sci-fi shooter cyborg horror steam achievements online artificial intelligence capture the flag esports tank sequel silent protagonist space marine tournament gadgets switch one-man army flamethrower boss fight explosion bosses deathmatch machine gun transformations power up train steam cloud jump flying enemies credits menu option crate health pack voice acting first-person perspective human polygonal 3d turret explosives upgradeable weapons transforming boss computer claw gun launch titles original soundtrack release shotgun rocket launcher loading screens crouching wasd movement cutscene non-player character profanity electricity elevator bloody wall pistol lightning assault rifle checkpoints xbox live melee crosshair full body awareness kill feed first person melee heads up display real-time combat blaster instant kill infinite ammo final boss difficulty level jump scare moment quicksaving quickloading loud ambient noises audio logs loading screen advice reloading hit points mercenary exploding barrel cheat code konami code blood splatter the future leaderboard multiplayer scoreboard zoom unlockable difficulty level difficulty achievement needle grenade mod support high definition graphics dolby digital disembodied voice energy weapons multiplayer lan team deathmatch unskippable cutscene bounce pad voice chat linear gameplay inside a living creature collector's edition camping splash damage kill to death ratio kill stealing plasma dedicated servers submachine gun bpjm indexed light up crosshair grenade launcher nail body armor circle-strafing invisibility scope pov cutscene guided by radio railgun nailgun anti-aircraft gun more than 100% health headshot alternate fire gibs run 'n gun multiple discs secret achievements ammo monster closet fully customizable controls swarming enemies air shot slip cover packaging frag suspicious generosity ammo box alien languages strafing strafe-jumping starter weapon walls covered with organic tissue super soldier rail shooting segment ranked match professional gaming instagib screenshots expendable npc novint falcon support unbreakable glass ultimate weapon pc to console port isolation corridor crawler red armor operation clusterfuck no scope spray and pray anti-cheat system southpaw pump action shotgun id tech 4 new guy unlockable gamer pics body disintegration retailer exclusive logo box art xfire e3 2005 opengl bald space marine hasty operation sequence humiliation the strogg railgun slugs original hyperblaster