Like more than one of them
29 games close to two or more of Dead Realm, Garry's Mod and Left 4 Dead 2
SCP: Secret Laboratory
Dead Realm, but free to play, and 12 times the hours
Loved · 91%Survival Horror · HorrorAlso like Left 4 Dead 2 and Garry's Mod
Killing Floor 2
Much the same as Left 4 Dead 2
Liked · 88%Zombies · FPSAlso like Dead Realm and Garry's Mod
GTFO
Left 4 Dead 2, but harder, and half the hours
Liked · 84%FPS · ZombiesAlso like Dead Realm and Garry's Mod
BIGFOOT
Dead Realm, but PvP, and twice the hours
Liked · 82%Survival Horror · HorrorAlso like Left 4 Dead 2 and Garry's Mod
Counter-Strike Nexon
Left 4 Dead 2, but free to play, and PvP
Mixed · 67%Zombies · FPSAlso like Garry's Mod and Dead Realm
Zombie Panic! Source
Left 4 Dead 2, but free to play, and more divisive
Liked · 85%Zombies · FPSAlso like Dead Realm and Garry's Mod
World War Z
Left 4 Dead 2, but more divisive
Liked · 82%Zombies · Online Co-OpAlso like Dead Realm and Garry's Mod
Propagation VR
Left 4 Dead 2, but in VR, and a tenth of the hours
Loved · 94%Zombies · FPSAlso like Dead Realm
Depth
Left 4 Dead 2, but underwater, and half the hours
Liked · 88%Team-Based · ShooterAlso like Dead Realm and Garry's Mod
Totally Accurate Battlegrounds
Garry's Mod, but free to play, and a battle royale
Liked · 88%Physics · SandboxAlso like Dead Realm and 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 and Dead Realm
Dying Light
Left 4 Dead 2, but open world, and with parkour
Loved · 95%Zombies · Survival HorrorAlso like Dead Realm
Inside the Backrooms
Dead Realm, but a puzzle game, and twice the hours
Liked · 80%Survival Horror · HorrorAlso like Left 4 Dead 2
Content Warning
Garry's Mod, but a horror game, and a tenth of the hours
Loved · 94%Physics · Online Co-OpAlso like Dead Realm 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 Dead Realm
WARMODE
Dead Realm, but free to play, and with zombies
Divisive · 62%Massively Multiplayer · SurvivalAlso like Left 4 Dead 2 and Garry's Mod
Insurgency: Sandstorm
Garry's Mod, but military, and half the hours
Liked · 85%FPS · ShooterAlso like Left 4 Dead 2 and Dead Realm
Deceit
Dead Realm, but a social deduction game, and three times the hours
Mixed · 79%Horror · Survival HorrorAlso like Left 4 Dead 2 and Garry's Mod
Backrooms: Escape Together
Dead Realm, but realistic
Liked · 89%Survival Horror · HorrorAlso like Left 4 Dead 2
Outlast 2
Dead Realm, but gorier, and three times the hours
Loved · 91%Survival Horror · HorrorAlso like Left 4 Dead 2
No More Room in Hell 2
Dead Realm, but with zombies
Divisive · 57%Survival Horror · Online Co-OpAlso like Left 4 Dead 2
Arizona Sunshine VR Legacy
Left 4 Dead 2, but co-op, and a quarter of the hours
Mixed · 79%Zombies · SurvivalAlso like Dead Realm
Evolve Stage 2
Left 4 Dead 2, but sci-fi, and more divisive
Mixed · 70%FPS · Team-BasedAlso like Garry's Mod and Dead Realm
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 and Dead Realm
Stay Close
Much the same as Dead Realm
Divisive · 62%Survival Horror · HorrorAlso like Left 4 Dead 2 and Garry's Mod
Dead Island Riptide Definitive Edition
Left 4 Dead 2, but an action RPG, and a third of the hours
Mixed · 71%Zombies · Co-opAlso like Dead Realm
Far Cry 4
Garry's Mod, but open world, and stealthy
Liked · 85%FPS · SandboxAlso like Left 4 Dead 2 and Dead Realm
More like Garry's Mod
1 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.