Like more than one of them
28 games close to two or more of Quake 4, Garry's Mod and Left 4 Dead 2
SCP: Secret Laboratory
Left 4 Dead 2, but free to play
Loved · 91%FPS · Survival HorrorAlso like Garry's Mod and Quake 4
GTFO
Left 4 Dead 2, but harder, and half the hours
Liked · 84%FPS · ZombiesAlso like Garry's Mod and Quake 4
Back 4 Blood
Left 4 Dead 2, but more divisive
Mixed · 69%Zombies · FPSAlso like Garry's Mod and Quake 4
No More Room in Hell
Left 4 Dead 2, but free to play, and half the hours
Loved · 90%Zombies · SurvivalAlso like Garry's Mod
Serious Sam 2
Quake 4, but co-op, and funny
Loved · 90%FPS · ShooterAlso like Garry's Mod and Left 4 Dead 2
Serious Sam 4
Quake 4, but co-op, and funny
Liked · 83%FPS · ShooterAlso like Garry's Mod and Left 4 Dead 2
Counter-Strike Nexon
Left 4 Dead 2, but free to play, and PvP
Mixed · 67%Zombies · FPSAlso like Garry's Mod
Half-Life 2
Quake 4, but story-rich, and twice the hours
Loved · 98%FPS · Sci-fiAlso like Garry's Mod and Left 4 Dead 2
Ravenfield
Garry's Mod, but single-player, and a third of the hours
Loved · 97%Sandbox · FPSAlso like Left 4 Dead 2
Evolve Stage 2
Left 4 Dead 2, but sci-fi, and more divisive
Mixed · 70%FPS · Team-BasedAlso like Quake 4 and Garry's Mod
Space Hulk: Deathwing - Enhanced Edition
Quake 4, but co-op, and more divisive
Mixed · 72%FPS · ShooterAlso like Garry's Mod and Left 4 Dead 2
Halo: The Master Chief Collection
Quake 4, but story-rich, and twice the hours
Loved · 92%FPS · Sci-fiAlso like Garry's Mod and Left 4 Dead 2
Call of Duty: Black Ops II
Left 4 Dead 2, but a quarter of the hours, and more divisive
Liked · 86%FPS · Team-BasedAlso like Quake 4 and Garry's Mod
Far Cry
Quake 4, but open world, and harder
Liked · 82%FPS · ShooterAlso like Garry's Mod and Left 4 Dead 2
Call of Duty: World at War
Left 4 Dead 2, but set in World War II
Loved · 92%Zombies · FPSAlso like Garry's Mod and Quake 4
Bodycam
Garry's Mod, but a tenth of the hours, and more divisive
Liked · 81%FPS · PhysicsAlso like Left 4 Dead 2 and Quake 4
Synergy
Left 4 Dead 2, but sci-fi, and a third of the hours
Liked · 89%Zombies · FPSAlso like Quake 4 and Garry's Mod
Shotgun Farmers
Quake 4, but team-based
Loved · 93%FPS · Arena ShooterAlso like Garry's Mod and Left 4 Dead 2
BONEWORKS
Garry's Mod, but in VR, and a quarter of the hours
Loved · 92%Physics · SandboxAlso like Quake 4
Insurgency: Sandstorm
Garry's Mod, but military, and half the hours
Liked · 85%FPS · ShooterAlso like Left 4 Dead 2
More like Quake 4
1 games closest to Quake 4 of your picks
More like Left 4 Dead 2
1 games closest to Left 4 Dead 2 of your picks
Cry of Fear
Left 4 Dead 2, but a psychological horror game, and a third of the hours
Liked · 89%Zombies · Survival Horror
How this list is made
Each game is measured against each of your picks the way a games-like list measures it: the Steam community tags, Steam genres and IGDB themes they share, each counting for more the fewer games carry it. A game's place is how alike it is to your picks together, as a share of each pick's best match, so one alike to two of them comes before one alike to just one. It must be close to at least one of them, as close as it would have to be on that game's own list.
None of your picks is on the list, nor a second release of one, nor a game of their own series. Up to 30 games are shown. Under each name, the kinds it shares with the pick it is closest to, and how it differs from that pick.