Like more than one of them
25 games close to two or more of Phantom Brigade, 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 Phantom Brigade and Left 4 Dead 2
R.E.P.O.
Garry's Mod, but a survival horror game, and a quarter of the hours
Loved · 96%Physics · ComedyAlso like Left 4 Dead 2
Insurgency: Sandstorm
Garry's Mod, but military, and half the hours
Liked · 85%FPS · ShooterAlso like Left 4 Dead 2
SCP: Secret Laboratory
Left 4 Dead 2, but free to play
Loved · 91%FPS · Survival HorrorAlso like Garry's Mod
GROUND BRANCH
Garry's Mod, but a quarter of the hours, and more divisive
Liked · 84%FPS · ShooterAlso like Left 4 Dead 2 and Phantom Brigade
Bodycam
Garry's Mod, but horror, and a tenth of the hours
Liked · 81%FPS · PhysicsAlso like Left 4 Dead 2
Counter-Strike: Source
Garry's Mod, but team-based, and competitive
Loved · 96%FPS · ShooterAlso like Left 4 Dead 2
Call of Duty: Modern Warfare 2 (2009)
Garry's Mod, but military, and a fifth of the hours
Loved · 93%FPS · ShooterAlso like Left 4 Dead 2
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
Generation Zero
Phantom Brigade, but a first-person shooter, and open world
Mixed · 72%Mechs · RobotsAlso like Left 4 Dead 2 and Garry's Mod
Splitgate
Garry's Mod, but free to play, and an arena shooter
Loved · 91%FPS · PhysicsAlso like Left 4 Dead 2
Totally Accurate Battlegrounds
Garry's Mod, but free to play, and a battle royale
Liked · 88%Physics · SandboxAlso like 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
Evolve Stage 2
Left 4 Dead 2, but sci-fi, and more divisive
Mixed · 70%FPS · Team-BasedAlso like Garry's Mod
Arma Reforger
Garry's Mod, but a wargame, and more divisive
Liked · 80%Sandbox · FPSAlso like Phantom Brigade
Counter-Strike Nexon
Left 4 Dead 2, but PvP, and more divisive
Mixed · 67%Zombies · FPSAlso like Garry's Mod
Zero Hour
Garry's Mod, but a tenth of the hours, and more divisive
Mixed · 77%FPS · ShooterAlso like Left 4 Dead 2
More like Garry's Mod
5 games closest to Garry's Mod of your picks
Scrap Mechanic
Garry's Mod, but a survival crafting game, and with base building
Loved · 92%Building · Physics
Hot Dogs, Horseshoes & Hand Grenades
Garry's Mod, but in VR, and single-player
Loved · 97%Physics · Sandbox
Fireworks Mania - An Explosive Simulator
Garry's Mod, but a hobby sim, and 3D
Loved · 97%Sandbox · Physics
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.