user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: defrag uses what type of video game engine? 
Knowledge Triplets: Oolite, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 4, cvg.computer_game_engine.predecessor_engine, id Tech 3
RIVE, base.wikipedia_infobox.video_game.platforms, Linux
Loadout, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Gyruss, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Technomage, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
TrickStyle, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Eversion, base.wikipedia_infobox.video_game.platforms, Linux
Transcendence, base.wikipedia_infobox.video_game.platforms, Linux
F.E.A.R., base.wikipedia_infobox.video_game.platforms, Microsoft Windows
InMomentum, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
TrueCombat:Elite, cvg.computer_videogame.uses_game_engine, id Tech 3
Closure, base.wikipedia_infobox.video_game.platforms, Linux
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Call of Duty: United Offensive
140, base.wikipedia_infobox.video_game.platforms, Linux
Oniken, base.wikipedia_infobox.video_game.platforms, Linux
Freedoom, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
SimGolf, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Robocraft, base.wikipedia_infobox.video_game.platforms, Linux
Synth, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Myst, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
g.11bxxz28q6, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Obscure, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Quake III Arena
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Medal of Honor: Allied Assault - Breakthrough
DEFCON, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
D-Day, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Wizorb, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Overgrowth, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Return to Castle Wolfenstein, cvg.computer_videogame.uses_game_engine, id Tech 3
GKART, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Below, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
République, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Blocks That Matter, base.wikipedia_infobox.video_game.platforms, Linux
Clonk, base.wikipedia_infobox.video_game.platforms, Linux
Soldier of Fortune II: Double Helix, cvg.computer_videogame.uses_game_engine, id Tech 3
RHEM, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
The Plan, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
SiN, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
OpenArena, cvg.computer_videogame.uses_game_engine, id Tech 3
F.E.A.R. Extraction Point, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Turok, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Call of Duty: United Offensive, cvg.computer_videogame.uses_game_engine, id Tech 3
DemonStar, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
SourceForts, base.wikipedia_infobox.video_game.platforms, Linux
id Tech 3, cvg.computer_game_engine.used_for_computer_games, American McGee's Alice
Indiana Jones and the Infernal Machine, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Litil Divil, base.wikipedia_infobox.video_game.platforms, Linux
Warpath, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Quake 3 Fortress
Biniax, base.wikipedia_infobox.video_game.platforms, Linux
Fez, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Pipeline, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
0 A.D., base.wikipedia_infobox.video_game.platforms, Linux
Achron, base.wikipedia_infobox.video_game.platforms, Linux
DeFRaG, cvg.computer_videogame.designers, g.11byb2l40w
Riven, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Axiom Verge, base.wikipedia_infobox.video_game.platforms, Linux
Infinifactory, base.wikipedia_infobox.video_game.platforms, Linux
There, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Snood, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Evolva, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
SimTunes, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
g.11btzz25rp, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Bugdom, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Evolve, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Eldritch, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Unturned, base.wikipedia_infobox.video_game.platforms, Linux
Rust, base.wikipedia_infobox.video_game.platforms, Linux
Hyperdimension Neptunia Mk2, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Stacking, base.wikipedia_infobox.video_game.platforms, Linux
Star Wars Jedi Knight: Jedi Academy, cvg.computer_videogame.uses_game_engine, id Tech 3
MindRover, base.wikipedia_infobox.video_game.platforms, Linux
Revenant, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
rFactor, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.used_for_computer_games, g.122rvkwj
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Smokin' Guns
id Tech 3, cvg.computer_game_engine.predecessor_engine, id Tech 2
Prototype, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
DeFRaG, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Strafe, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Cogs, base.wikipedia_infobox.video_game.platforms, Linux
Portal, base.wikipedia_infobox.video_game.platforms, Linux
Glest, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Critterding, base.wikipedia_infobox.video_game.platforms, Linux
Arcomage, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Gish, base.wikipedia_infobox.video_game.platforms, Linux
J.U.L.I.A., base.wikipedia_infobox.video_game.platforms, Linux
Xonotic, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
g.11bxxz28q6, base.wikipedia_infobox.video_game.platforms, Linux
SimCopter, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Iron Grip: Warlord
Monopoly video games, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Strata, base.wikipedia_infobox.video_game.platforms, Linux
Bejeweled 3, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Verdun, base.wikipedia_infobox.video_game.platforms, Linux
XPilot, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Forced, base.wikipedia_infobox.video_game.platforms, Linux
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Wolfenstein: Enemy Territory
id Tech 3, cvg.computer_game_engine.used_for_computer_games, 007: Agent Under Fire
Portal, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Biniax, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
g.11c3l72yg8, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
VDrift, base.wikipedia_infobox.video_game.platforms, Linux
PlaneShift, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Medal of Honor: Pacific Assault, cvg.computer_videogame.uses_game_engine, id Tech 3
Pure, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine_family.engines_in_this_family, id Tech
GetAmped2, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Heavy Metal: F.A.K.K.²
Inversion, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Star Trek: Elite Force II
DoomRL, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Space Trader
Rollcage, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Another World, base.wikipedia_infobox.video_game.platforms, Linux
Robocraft, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Watched, base.wikipedia_infobox.video_game.platforms, Linux
Full Throttle, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
M.U.G.E.N, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Crazyracing Kartrider, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
The Chaos Engine, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Pandemonium, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
g.11b72ldxds, base.wikipedia_infobox.video_game.platforms, Linux
Snapshot, base.wikipedia_infobox.video_game.platforms, Linux
Beyond the Red Line, base.wikipedia_infobox.video_game.platforms, Linux
Clue, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
OlliOlli, base.wikipedia_infobox.video_game.platforms, Linux
Scivelation, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Unepic, base.wikipedia_infobox.video_game.platforms, Linux
Wizorb, base.wikipedia_infobox.video_game.platforms, Linux
GeneRally, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
F.E.A.R. 2: Project Origin, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Beneath, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Synaesthete, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Automation, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Soma, base.wikipedia_infobox.video_game.platforms, Linux
The Chaos Engine, base.wikipedia_infobox.video_game.platforms, Linux
Out of Order, base.wikipedia_infobox.video_game.platforms, Linux
Tremulous, cvg.computer_videogame.uses_game_engine, id Tech 3
Nexuiz, base.wikipedia_infobox.video_game.platforms, Linux
Ignition, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Urban Terror, cvg.computer_videogame.uses_game_engine, id Tech 3
Movie Battles, cvg.computer_videogame.uses_game_engine, id Tech 3
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Quake Live
Ground Control, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Z, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
World of Padman, cvg.computer_videogame.uses_game_engine, id Tech 3
Kinetic Void, base.wikipedia_infobox.video_game.platforms, Linux
Domination, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
MDK, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
AC-130: Operation Devastation, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
ScrumbleShip, base.wikipedia_infobox.video_game.platforms, Linux
SpaceStationSim, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Carom3d, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
No, Thank You !!!, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Soldier of Fortune II: Double Helix
Netrek, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Shatter, base.wikipedia_infobox.video_game.platforms, Linux
Driver, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
AirMech, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Spec Ops: The Line, base.wikipedia_infobox.video_game.platforms, Linux
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Star Wars Jedi Knight: Jedi Academy
Vangers, base.wikipedia_infobox.video_game.platforms, Linux
Nihilumbra, base.wikipedia_infobox.video_game.platforms, Linux
McPixel, base.wikipedia_infobox.video_game.platforms, Linux
Nethergate, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
American McGee's Alice, cvg.computer_videogame.uses_game_engine, id Tech 3
VDrift, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Splice, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
007: Agent Under Fire, cvg.computer_videogame.uses_game_engine, id Tech 3
0 A.D., base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Teleglitch, base.wikipedia_infobox.video_game.platforms, Linux
g.11b7x3k0ht, base.wikipedia_infobox.video_game.platforms, Linux
id Tech 3, cvg.computer_game_engine.used_for_computer_games, DeFRaG
Sature, base.wikipedia_infobox.video_game.platforms, Linux
Carmageddon TDR 2000, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.used_for_computer_games, g.122l3d02
Shank, base.wikipedia_infobox.video_game.platforms, Linux
Smokin' Guns, cvg.computer_videogame.uses_game_engine, id Tech 3
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Challenge ProMode Arena
Unrest, base.wikipedia_infobox.video_game.platforms, Linux
RayStorm, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
g.11b7x2h2qs, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Star Trek: Elite Force II, cvg.computer_videogame.uses_game_engine, id Tech 3
Mimpi, base.wikipedia_infobox.video_game.platforms, Linux
Startopia, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Upshift Strikeracer, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Iron Grip: Warlord, cvg.computer_videogame.uses_game_engine, id Tech 3
DeFRaG, cvg.computer_videogame.cvg_genre, First-person Shooter
S.C.A.R.S., base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Nexuiz, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Contra, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Multiplayer video game, cvg.gameplay_mode.games_with_this_mode, DeFRaG
SimFarm, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Re-Volt, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Bejeweled 2, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
SimSig, base.wikipedia_infobox.video_game.platforms, Linux
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Tremulous
Spectre, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Star Wars Jedi Knight II: Jedi Outcast
Star Trek: Voyager – Elite Force, cvg.computer_videogame.uses_game_engine, id Tech 3
Zapitalism, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Rymdkapsel, base.wikipedia_infobox.video_game.platforms, Linux
Ad Verbum, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
SuperTux, base.wikipedia_infobox.video_game.platforms, Linux
DeFRaG, cvg.computer_videogame.designers, g.11byb3jwfm
Challenge ProMode Arena, cvg.computer_videogame.uses_game_engine, id Tech 3
Project Torque, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Inkawar, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
g.11b7_rb9kn, base.wikipedia_infobox.video_game.platforms, Linux
g.11b731kvgy, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
TMNT, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Monochroma, base.wikipedia_infobox.video_game.platforms, Linux
Apotheon, base.wikipedia_infobox.video_game.platforms, Linux
Outlast, base.wikipedia_infobox.video_game.platforms, Linux
Audiosurf, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Nidhogg, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.used_for_computer_games, TrueCombat:Elite
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Unvanquished
OpenTTD, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Quake III Arena, cvg.computer_videogame.uses_game_engine, id Tech 3
id Tech 3, cvg.computer_game_engine.engine_family, id Tech
Spellevator, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
OpenClonk, base.wikipedia_infobox.video_game.platforms, Linux
Luftrausers, base.wikipedia_infobox.video_game.platforms, Linux
id Tech 3, cvg.computer_game_engine.used_for_computer_games, OpenArena
London 2012, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Heist, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
g.11c3l0k_nl, base.wikipedia_infobox.video_game.platforms, Linux
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Medal of Honor: Pacific Assault
DeFRaG, cvg.computer_videogame.versions, DeFRaG
Dex, base.wikipedia_infobox.video_game.platforms, Linux
Vangers, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Sentris, base.wikipedia_infobox.video_game.platforms, Linux
M.U.G.E.N, base.wikipedia_infobox.video_game.platforms, Linux
Reassembly, base.wikipedia_infobox.video_game.platforms, Linux
Chaotix, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Return to Castle Wolfenstein
Microshaft Winblows 98, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Severity, cvg.computer_videogame.uses_game_engine, id Tech 3
GLtron, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Osmos, base.wikipedia_infobox.video_game.platforms, Linux
ArcheAge, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
F.E.A.R. 2: Reborn, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Dropsy, base.wikipedia_infobox.video_game.platforms, Linux
Medal of Honor: Allied Assault, cvg.computer_videogame.uses_game_engine, id Tech 3
g.11b7x3gbj_, base.wikipedia_infobox.video_game.platforms, Linux
Armello, base.wikipedia_infobox.video_game.platforms, Linux
Wolfenstein: Enemy Territory, cvg.computer_videogame.uses_game_engine, id Tech 3
Quake 3 Fortress, cvg.computer_videogame.uses_game_engine, id Tech 3
Powerslide, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Nox, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Armikrog, base.wikipedia_infobox.video_game.platforms, Linux
SimAnt, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
F.E.A.R. 3, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Xconq, base.wikipedia_infobox.video_game.platforms, Linux
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Resident Evil: Dead Aim
Bejeweled Twist, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Medal of Honor: Allied Assault
Freedoom, base.wikipedia_infobox.video_game.platforms, Linux
Forsaken, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Unvanquished, cvg.computer_videogame.uses_game_engine, id Tech 3
VVVVVV, base.wikipedia_infobox.video_game.platforms, Linux
No Time to Explain, base.wikipedia_infobox.video_game.platforms, Linux
Xconq, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
8BitMMO, base.wikipedia_infobox.video_game.platforms, Linux
g.1211rd42, cvg.computer_videogame.uses_game_engine, id Tech 3
id Tech 3, cvg.computer_game_engine.used_for_computer_games, James Bond 007: Everything or Nothing
Ibb and Obb, base.wikipedia_infobox.video_game.platforms, Linux
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Call of Duty
PlaneShift, base.wikipedia_infobox.video_game.platforms, Linux
Heavy Metal: F.A.K.K.², cvg.computer_videogame.uses_game_engine, id Tech 3
Elsword, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Outlive, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Papers, Please, base.wikipedia_infobox.video_game.platforms, Linux
Call of Duty 2, cvg.computer_videogame.uses_game_engine, id Tech 3
O.D.T., base.wikipedia_infobox.video_game.platforms, Microsoft Windows
RayCrisis, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Proteus, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Glover, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Nekro, base.wikipedia_infobox.video_game.platforms, Linux
Out There, base.wikipedia_infobox.video_game.platforms, Linux
id Tech, cvg.computer_game_engine_family.engines_in_this_family, id Tech 3
WorldShift, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.used_for_computer_games, World of Padman
Waveform, base.wikipedia_infobox.video_game.platforms, Linux
Noct, base.wikipedia_infobox.video_game.platforms, Linux
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Severity
DeFRaG, cvg.computer_game_mod.game_modded, Quake III Arena
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Star Trek: Voyager – Elite Force
Asterix & Obelix XXL, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
SpaceChem, base.wikipedia_infobox.video_game.platforms, Linux
Oolite, base.wikipedia_infobox.video_game.platforms, Linux
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Movie Battles
S.W.I.N.E., base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Dex, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Protöthea, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
VVVVVV, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Antichamber, base.wikipedia_infobox.video_game.platforms, Linux
DeFRaG, cvg.computer_videogame.gameplay_modes, Multiplayer video game
SimEarth, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Enigma, base.wikipedia_infobox.video_game.platforms, Linux
Driver 3, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Call of Duty, cvg.computer_videogame.uses_game_engine, id Tech 3
Spintires, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Dynomite!, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Cryptozookeeper, base.wikipedia_infobox.video_game.platforms, Linux
Sentient, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 2, cvg.computer_game_engine.successor_engine, id Tech 3
E-racer, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Section 8, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Evoland, base.wikipedia_infobox.video_game.platforms, Linux
Exteel, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Eets, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
MDK2, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Brink, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Space Trader, cvg.computer_videogame.uses_game_engine, id Tech 3
Terminus, base.wikipedia_infobox.video_game.platforms, Linux
Fractal, base.wikipedia_infobox.video_game.platforms, Linux
SuperTuxKart, base.wikipedia_infobox.video_game.platforms, Linux
James Bond 007: Everything or Nothing, cvg.computer_videogame.uses_game_engine, id Tech 3
g.122rv93_, base.wikipedia_infobox.video_game.platforms, Linux
DeFRaG, cvg.game_version.game, DeFRaG
Xeodrifter, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
The Spirit Engine 2, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
g.11byb6dg2f, cvg.cvg_designer.games_designed, DeFRaG
Deponia, base.wikipedia_infobox.video_game.platforms, Linux
XEvil, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Medal of Honor: Allied Assault - Breakthrough, cvg.computer_videogame.uses_game_engine, id Tech 3
Verdun, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Dyad, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Warp, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Nekro, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Octodad, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.developer, id Software
g.122rvkwj, cvg.computer_videogame.uses_game_engine, id Tech 3
Resident Evil: Dead Aim, cvg.computer_videogame.uses_game_engine, id Tech 3
g.11b81hzt5y, base.wikipedia_infobox.video_game.platforms, Linux
Single-player video game, cvg.gameplay_mode.games_with_this_mode, DeFRaG
Command & Conquer, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Requital, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Proteus, base.wikipedia_infobox.video_game.platforms, Linux
Cogs, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Aargon, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Unvanquished, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
g.11b7wld9vr, base.wikipedia_infobox.video_game.platforms, Linux
Dark Salvation, cvg.computer_videogame.uses_game_engine, id Tech 3
Anachronox, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
RIVE, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Dark Salvation
Star Wars Jedi Knight II: Jedi Outcast, cvg.computer_videogame.uses_game_engine, id Tech 3
MindRover, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Dyad, base.wikipedia_infobox.video_game.platforms, Linux
Hack 'n' Slash, base.wikipedia_infobox.video_game.platforms, Linux
ÜberSoldier, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Eldritch, base.wikipedia_infobox.video_game.platforms, Linux
Capsized, base.wikipedia_infobox.video_game.platforms, Linux
Pyroblazer, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Formula C, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Crawl, base.wikipedia_infobox.video_game.platforms, Linux
X-Note, base.wikipedia_infobox.video_game.platforms, Linux
g.11byb2l40w, cvg.cvg_designer.games_designed, DeFRaG
In Memoriam, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Operation: Blockade, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
g.11byb3jwfm, cvg.cvg_designer.games_designed, DeFRaG
SuperTux, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Machines, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
L.A. Noire, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Passage, base.wikipedia_infobox.video_game.platforms, Linux
Droplitz, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
0x10c, base.wikipedia_infobox.video_game.platforms, Linux
N2O, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
DEFCON, base.wikipedia_infobox.video_game.platforms, Linux
DeFRaG, cvg.computer_videogame.designers, g.11byb6dg2f
Videoball, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
id Tech 3, cvg.computer_game_engine.successor_engine, id Tech 4
WarGames: Defcon 1, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
R.U.S.E., base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Fez, base.wikipedia_infobox.video_game.platforms, Linux
Tropico, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Abuse, base.wikipedia_infobox.video_game.platforms, Linux
Zero4 Champ DooZy-J Type-R, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Netrek, base.wikipedia_infobox.video_game.platforms, Linux
Echelon, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Hyperdimension Neptunia, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
DeFRaG, cvg.computer_videogame.gameplay_modes, Single-player video game
Overgrowth, base.wikipedia_infobox.video_game.platforms, Linux
Factorio, base.wikipedia_infobox.video_game.platforms, Linux
In the Groove, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Windosill, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Puddle, base.wikipedia_infobox.video_game.platforms, Linux
Sudeki, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Ryzom, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
DeFRaG, cvg.computer_game_engine.used_for_computer_games, id Tech 3
Lumines, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
m.07y51vk, base.yupgrade.user.topics, DeFRaG
Quake III Arena, cvg.computer_videogame.mods, DeFRaG
Noctis, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Edge, base.wikipedia_infobox.video_game.platforms, Linux
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Urban Terror
Litil Divil, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Audiosurf 2, base.wikipedia_infobox.video_game.platforms, Linux
V-Rally, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
DeFRaG, cvg.computer_videogame.uses_game_engine, id Tech 3
id Tech 3, cvg.computer_game_engine.used_for_computer_games, g.1211rd42
id Tech 3, cvg.computer_game_engine.used_for_computer_games, Call of Duty 2
DeFRaG, base.wikipedia_infobox.video_game.platforms, Linux
Eversion, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
First-person Shooter, cvg.cvg_genre.games, DeFRaG
Quake Live, cvg.computer_videogame.uses_game_engine, id Tech 3
O2Jam, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
SiN, base.wikipedia_infobox.video_game.platforms, Linux
DoomRL, base.wikipedia_infobox.video_game.platforms, Linux
Bejeweled, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Recoil, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
C-evo, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
Aztez, base.wikipedia_infobox.video_game.platforms, Linux
Splice, base.wikipedia_infobox.video_game.platforms, Linux
Pathologic, base.wikipedia_infobox.video_game.platforms, Linux
Battle Engine Aquila, base.wikipedia_infobox.video_game.platforms, Microsoft Windows
g.122l3d02, cvg.computer_videogame.uses_game_engine, id Tech 3
Counter-Strike, base.wikipedia_infobox.video_game.platforms, Linux

Answer: id Tech