Like more than one of them
24 games close to two or more of Shank 2, 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
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
Serious Sam 3: BFE
Garry's Mod, but a boomer shooter, and a tenth of the hours
Liked · 88%FPS · ComedyAlso like Shank 2 and Left 4 Dead 2
Counter-Strike Nexon
Left 4 Dead 2, but free to play, and PvP
Mixed · 67%Zombies · FPSAlso like Garry's Mod
Rocketbirds: Hardboiled Chicken
Shank 2, but a 2D platformer, and a shoot 'em up
Liked · 80%Local Co-Op · PlatformerAlso like Garry's Mod and Left 4 Dead 2
Guns, Gore and Cannoli 2
Shank 2, but a shoot 'em up, and a 2D platformer
Loved · 94%Side Scroller · Local Co-OpAlso 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
Superfighters Deluxe
Shank 2, but a fighting game, and three times the hours
Liked · 89%Beat 'em up · Local Co-OpAlso 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
Serious Sam 2
Garry's Mod, but a boomer shooter, and a tenth of the hours
Loved · 90%FPS · ComedyAlso 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
Final Exam
Shank 2, but co-op, and with zombies
Liked · 84%Beat 'em up · Local Co-OpAlso 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
Far Cry 3
Garry's Mod, but stealthy, and a third of the hours
Liked · 88%FPS · SandboxAlso like Left 4 Dead 2
Super Bunny Man
Garry's Mod, but a platformer, and a party game
Liked · 85%Sandbox · PhysicsAlso like Shank 2
Shotgun Farmers
Garry's Mod, but team-based, and a tenth of the hours
Loved · 93%FPS · ShooterAlso like Left 4 Dead 2
More like Shank 2
4 games closest to Shank 2 of your picks
The Expendabros
Shank 2, but free to play, and a third of the hours
Loved · 97%Local Co-Op · Side Scroller
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
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.