Like more than one of them
21 games close to two or more of Never Split the Party, Garry's Mod and Left 4 Dead 2
Gunfire Reborn
Never Split the Party, but a first-person shooter, and eight 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
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
Content Warning
Garry's Mod, but a horror game, and a tenth of the hours
Loved · 94%Physics · Online Co-OpAlso like Never Split the Party and Left 4 Dead 2
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 Never Split the Party
PEAK
Garry's Mod, but a 3D platformer, and a survival game
Loved · 94%Physics · Online Co-OpAlso like Never Split the Party
Counter-Strike Nexon
Left 4 Dead 2, but free to play, and PvP
Mixed · 67%Zombies · FPSAlso like Garry's Mod
Zombie Panic! Source
Left 4 Dead 2, but half the hours, and more divisive
Liked · 85%Zombies · FPSAlso like Garry's Mod
Death Road to Canada
Never Split the Party, but built by hand, and four times the hours
Loved · 93%Action Roguelike · RoguelikeAlso like Left 4 Dead 2
Unturned
Left 4 Dead 2, but a survival crafting game
Loved · 91%Zombies · SurvivalAlso like Garry's Mod
Pratfall
Garry's Mod, but a roguelike, and procedurally generated
Loved · 90%Physics · ComedyAlso like Never Split the Party
Call of Duty: World at War
Left 4 Dead 2, but set in World War II
Loved · 92%Zombies · FPSAlso like Garry's Mod
Far Cry 4
Garry's Mod, but open world, and half the hours
Liked · 85%FPS · SandboxAlso like Left 4 Dead 2
Roboquest
Never Split the Party, but a first-person shooter, and four times the hours
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
Deadzone: Rogue
Never Split the Party, but first-person, and built by hand
Liked · 82%Roguelike · Action RoguelikeAlso like Left 4 Dead 2
More like Never Split the Party
3 games closest to Never Split the Party of your picks
Streets of Rogue
Never Split the Party, but an immersive sim, and five times the hours
Loved · 96%Action Roguelike · Roguelike
Children of Morta
Never Split the Party, but three times the hours
Liked · 88%Action Roguelike · Roguelike
The Binding of Isaac: Rebirth
Never Split the Party, but a twin-stick shooter, and 22 times the hours
Loved · 97%Action Roguelike · Roguelike
More like Garry's Mod
3 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
3 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
Dead Island Definitive Edition
Left 4 Dead 2, but an action RPG, and open world
Liked · 82%Zombies · Survival
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.