Like more than one of them
25 games close to two or more of The Hong Kong Massacre, Garry's Mod and Left 4 Dead 2
Killing Floor
Much the same as Left 4 Dead 2
Loved · 95%Zombies · FPSAlso like Garry's Mod and The Hong Kong Massacre
SAS: Zombie Assault 4
The Hong Kong Massacre, but co-op, and three times the hours
Liked · 86%Top-Down Shooter · Top-DownAlso 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
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
Nation Red
The Hong Kong Massacre, but about survival, and with zombies
Liked · 89%Top-Down Shooter · Twin Stick ShooterAlso like Left 4 Dead 2
Sven Co-op
Left 4 Dead 2, but free to play, and retro
Loved · 94%FPS · Team-BasedAlso like The Hong Kong Massacre and Garry's Mod
Crimsonland
The Hong Kong Massacre, but couch co-op, and three times the hours
Loved · 92%Top-Down Shooter · Twin Stick ShooterAlso like Left 4 Dead 2
Double Action: Boogaloo
The Hong Kong Massacre, but free to play, and with parkour
Loved · 93%Bullet Time · ShooterAlso like 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 Left 4 Dead 2
Counter-Strike Nexon
Left 4 Dead 2, but PvP, and more divisive
Mixed · 67%Zombies · FPSAlso like Garry's Mod
Splatter - Zombiecalypse Now
The Hong Kong Massacre, but post-apocalyptic, and with destruction
Liked · 89%Top-Down Shooter · Bullet TimeAlso 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
F.E.A.R. 3
Left 4 Dead 2, but with bullet time, and a third of the hours
Mixed · 71%FPS · ZombiesAlso like The Hong Kong Massacre and Garry's Mod
CS2D
The Hong Kong Massacre, but 2D, and a third of the hours
Loved · 90%Top-Down Shooter · Top-DownAlso like Left 4 Dead 2
Zombie Panic! Source
Left 4 Dead 2, but half the hours, and more divisive
Liked · 85%Zombies · FPSAlso like Garry's Mod
Unturned
Left 4 Dead 2, but a survival crafting game
Loved · 91%Zombies · SurvivalAlso like Garry's Mod
Call of Duty: World at War
Left 4 Dead 2, but set in World War II
Loved · 92%Zombies · FPSAlso like Garry's Mod
Ultimate Zombie Defense
The Hong Kong Massacre, but a tower defense game, and with zombies
Liked · 85%Top-Down Shooter · Top-DownAlso like Left 4 Dead 2
More like The Hong Kong Massacre
2 games closest to The Hong Kong Massacre of your picks
HELLDIVERS
The Hong Kong Massacre, but co-op, and five times the hours
Loved · 90%Top-Down Shooter · Twin Stick Shooter
My Friend Pedro
The Hong Kong Massacre, but a 2D platformer, and side-scrolling
Loved · 95%Bullet Time · Shooter
More like Garry's Mod
2 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
More like Left 4 Dead 2
1 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
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.