Like more than one of them
26 games close to two or more of Garry's Mod, Red Dead Redemption 2 and Left 4 Dead 2
Fallout: New Vegas
Red Dead Redemption 2, but an action RPG, and single-player
Loved · 96%Western · Open worldAlso like Garry's Mod and 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
Just Cause 2
Garry's Mod, but a third-person shooter, and a quarter of the hours
Loved · 91%Sandbox · PhysicsAlso like Red Dead Redemption 2
SCP: Secret Laboratory
Left 4 Dead 2, but free to play
Loved · 91%FPS · Survival HorrorAlso like Garry's Mod
Ravenfield
Garry's Mod, but single-player, and a third of the hours
Loved · 97%Sandbox · FPSAlso like Left 4 Dead 2
Unturned
Left 4 Dead 2, but free to play, and a survival crafting game
Loved · 91%Zombies · SurvivalAlso like Garry's Mod
Far Cry 4
Garry's Mod, but open world, and half the hours
Liked · 85%FPS · SandboxAlso like Left 4 Dead 2
Saints Row: The Third
Garry's Mod, but a third-person shooter, and open world
Loved · 96%Sandbox · ComedyAlso like Red Dead Redemption 2
Far Cry 3
Garry's Mod, but stealthy, and a third of the hours
Liked · 88%FPS · SandboxAlso like Left 4 Dead 2
Counter-Strike Nexon
Left 4 Dead 2, but PvP, and more divisive
Mixed · 67%Zombies · FPSAlso like Garry's Mod
Insurgency: Sandstorm
Garry's Mod, but military, and more divisive
Liked · 85%FPS · ShooterAlso like Left 4 Dead 2
Fallout 4
Red Dead Redemption 2, but an action RPG, and post-apocalyptic
Liked · 81%Open world · ShooterAlso like Garry's Mod and Left 4 Dead 2
Just Cause 3
Garry's Mod, but with destruction, and third-person
Liked · 84%Physics · SandboxAlso like Red Dead Redemption 2
Blockland
Garry's Mod, but a quarter of the hours, and more divisive
Mixed · 74%Building · SandboxAlso like Left 4 Dead 2
Z1 Battle Royale
Left 4 Dead 2, but an MMO, and open world
Divisive · 56%Zombies · SurvivalAlso like Garry's Mod
Totally Accurate Battlegrounds
Garry's Mod, but free to play, and a battle royale
Liked · 88%Physics · SandboxAlso like Left 4 Dead 2
Deadside
Garry's Mod, but a survival game, and with crafting
Mixed · 76%Sandbox · FPSAlso 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
Grand Theft Auto V Enhanced
Garry's Mod, but third-person, and half the hours
Liked · 83%Sandbox · ShooterAlso like Red Dead Redemption 2
More like Garry's Mod
4 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
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.