Like more than one of them
25 games close to two or more of Moons of Madness, Left 4 Dead 2 and Garry's Mod
SCP: Secret Laboratory
Left 4 Dead 2, but free to play
Loved · 91%FPS · Survival HorrorAlso like Garry's Mod and Moons of Madness
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
DOOM 3: BFG Edition
Moons of Madness, but a first-person shooter, and gorier
Liked · 86%Mars · HorrorAlso like Left 4 Dead 2
Inside the Backrooms
Moons of Madness, but co-op
Liked · 80%Horror · Psychological HorrorAlso like 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
Zombie Panic! Source
Left 4 Dead 2, but free to play, and more divisive
Liked · 85%Zombies · FPSAlso like Garry's Mod
Counter-Strike Nexon
Left 4 Dead 2, but PvP, and more divisive
Mixed · 67%Zombies · FPSAlso like Garry's Mod
Content Warning
Garry's Mod, but a horror game, and a tenth of the hours
Loved · 94%Physics · Online Co-OpAlso like Left 4 Dead 2
Kerbal Space Program
Garry's Mod, but a space sim, and single-player
Loved · 96%Physics · SandboxAlso like Moons of Madness
Deceit
Left 4 Dead 2, but a social deduction game, and your choices matter
Mixed · 79%Zombies · FPSAlso like Garry's Mod
Far Cry
Garry's Mod, but open world, and a fifth of the hours
Liked · 82%FPS · SandboxAlso like Left 4 Dead 2
Call of Duty: Black Ops II
Left 4 Dead 2, but a quarter of the hours
Liked · 86%FPS · Team-BasedAlso like Garry's Mod
Unturned
Left 4 Dead 2, but a survival crafting game
Loved · 91%Zombies · SurvivalAlso like Garry's Mod
Ravenfield
Garry's Mod, but military, and a third of the hours
Loved · 97%Sandbox · FPSAlso like Left 4 Dead 2
Backrooms: Escape Together
Moons of Madness, but co-op, and realistic
Liked · 89%Horror · Psychological HorrorAlso 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
Depth
Left 4 Dead 2, but underwater, and half the hours
Liked · 88%Team-Based · ShooterAlso like Garry's Mod
BIGFOOT
Left 4 Dead 2, but PvP, and a third of the hours
Liked · 82%Survival Horror · FPSAlso like Garry's Mod
Space Hulk: Deathwing - Enhanced Edition
Garry's Mod, but a tenth of the hours, and more divisive
Mixed · 72%FPS · Online Co-OpAlso like Left 4 Dead 2
Synergy
Left 4 Dead 2, but sci-fi, and a third of the hours
Liked · 89%Zombies · FPSAlso like Garry's Mod
More like Left 4 Dead 2
2 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
Dead Island Definitive Edition
Left 4 Dead 2, but an action RPG, and open world
Liked · 82%Zombies · Survival
More like Garry's Mod
3 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
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.