Like more than one of them
27 games close to two or more of The Red Solstice, Garry's Mod and Left 4 Dead 2
GTFO
Left 4 Dead 2, but harder, and half the hours
Liked · 84%FPS · ZombiesAlso like The Red Solstice and Garry's Mod
SCP: Secret Laboratory
Left 4 Dead 2, but free to play
Loved · 91%FPS · Survival HorrorAlso like Garry's Mod
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
Natural Selection 2
The Red Solstice, but competitive, and five times the hours
Liked · 85%Aliens · RTSAlso like 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
PlanetSide 2
The Red Solstice, but free to play, and seven times the hours
Liked · 80%Tactical · Team-BasedAlso like Garry's Mod and Left 4 Dead 2
Splitgate
Garry's Mod, but free to play, and an arena shooter
Loved · 91%FPS · PhysicsAlso 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
Bodycam
Garry's Mod, but a tenth of the hours, and more divisive
Liked · 81%FPS · PhysicsAlso like Left 4 Dead 2
GROUND BRANCH
Garry's Mod, but military, and a quarter of the hours
Liked · 84%FPS · ShooterAlso like Left 4 Dead 2 and The Red Solstice
Serious Sam HD: The First Encounter
Garry's Mod, but a boomer shooter, and a tenth of the hours
Loved · 93%FPS · ComedyAlso like The Red Solstice and Left 4 Dead 2
Serious Sam 3: BFE
Garry's Mod, but a boomer shooter, and gorier
Liked · 88%FPS · ComedyAlso like The Red Solstice and Left 4 Dead 2
Tom Clancy's Rainbow Six: Vegas 2
The Red Solstice, but first-person
Liked · 85%Tactical · Co-opAlso like Left 4 Dead 2 and Garry's Mod
Zero Hour
Garry's Mod, but a tenth of the hours, and more divisive
Mixed · 77%FPS · ShooterAlso like The Red Solstice and Left 4 Dead 2
Insurgency: Sandstorm
Garry's Mod, but military, and half the hours
Liked · 85%FPS · ShooterAlso like Left 4 Dead 2
Space Hulk: Deathwing - Enhanced Edition
The Red Solstice, but first-person
Mixed · 72%Aliens · Co-opAlso like Garry's Mod and Left 4 Dead 2
Alien Swarm
The Red Solstice, but free to play, and even better loved
Loved · 95%Aliens · Top-DownAlso 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
PAYDAY: The Heist
The Red Solstice, but a heist, and first-person
Loved · 93%Tactical · Co-opAlso like Left 4 Dead 2 and Garry's Mod
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
More like Left 4 Dead 2
2 games closest to Left 4 Dead 2 of your picks
Dead Island Definitive Edition
Left 4 Dead 2, but an action RPG, and open world
Liked · 82%Zombies · Survival
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.