Like more than one of them
23 games close to two or more of Colt Canyon, Garry's Mod and Left 4 Dead 2
Gunfire Reborn
Colt Canyon, but co-op, and five times the hours
Loved · 93%Roguelike · Action RoguelikeAlso like Garry's Mod
SCP: Secret Laboratory
Left 4 Dead 2, but free to play
Loved · 91%FPS · Survival HorrorAlso like Garry's Mod
Fallout: New Vegas
Colt Canyon, but an action RPG, and ten times the hours
Loved · 96%Western · Open worldAlso like Garry's Mod and Left 4 Dead 2
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
Roboquest
Colt Canyon, but three times the hours, and even better loved
Loved · 95%Action Roguelike · RogueliteAlso 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
Counter-Strike Nexon
Left 4 Dead 2, but free to play, and PvP
Mixed · 67%Zombies · FPSAlso like Garry's Mod
Hunt: Showdown 1896
Left 4 Dead 2, but open world, and four times the hours
Mixed · 74%Team-Based · FPSAlso like Colt Canyon
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
Unturned
Left 4 Dead 2, but a survival crafting game
Loved · 91%Zombies · SurvivalAlso like Garry's Mod
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
Fistful of Frags
Colt Canyon, but free to play, and PvP
Loved · 91%Western · ShooterAlso like Garry's Mod
Splitgate
Garry's Mod, but free to play, and an arena shooter
Loved · 91%FPS · PhysicsAlso 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
Totally Accurate Battlegrounds
Garry's Mod, but free to play, and a battle royale
Liked · 88%Physics · SandboxAlso like Left 4 Dead 2
Blockland
Garry's Mod, but a quarter of the hours, and more divisive
Mixed · 74%Building · SandboxAlso like Left 4 Dead 2
Far Cry 4
Garry's Mod, but open world, and half the hours
Liked · 85%FPS · SandboxAlso like Left 4 Dead 2
Far Far West
Colt Canyon, but not a roguelike, and co-op
Loved · 96%Western · ShooterAlso like Garry's Mod
More like Colt Canyon
2 games closest to Colt Canyon of your picks
Streets of Rogue
Colt Canyon, but an immersive sim, and three times the hours
Loved · 96%Action Roguelike · Roguelike
More like Garry's Mod
5 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 half the hours
Loved · 97%Physics · Sandbox
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.