Like more than one of them
23 games close to two or more of Slasher's Keep, Left 4 Dead 2 and Garry's Mod
Gunfire Reborn
Slasher's Keep, but a looter shooter, and four times the hours
Loved · 93%Action Roguelike · RogueliteAlso 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
Deadzone: Rogue
Slasher's Keep, but co-op, and horror
Liked · 82%Dungeon Crawler · Action RoguelikeAlso like Left 4 Dead 2
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
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
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
Roboquest
Slasher's Keep, but faster, and even better loved
Loved · 95%Action Roguelike · RogueliteAlso 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
Borderlands: The Pre-Sequel
Garry's Mod, but a looter shooter, and an action RPG
Mixed · 79%FPS · ComedyAlso 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
Unturned
Left 4 Dead 2, but a survival crafting game
Loved · 91%Zombies · SurvivalAlso like Garry's Mod
Borderlands 3
Garry's Mod, but a looter shooter, and loot-driven
Liked · 81%FPS · Online 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
Dead Effect 2
Left 4 Dead 2, but an action RPG, and a third of the hours
Mixed · 73%Zombies · FPSAlso like Garry's Mod
More like Slasher's Keep
3 games closest to Slasher's Keep of your picks
Children of Morta
Slasher's Keep, but pixel art, and couch co-op
Liked · 88%Action Roguelike · Dungeon Crawler
Heroes of Hammerwatch
Slasher's Keep, but co-op, and three times the hours
Liked · 87%Action Roguelike · Dungeon Crawler
More like Left 4 Dead 2
1 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
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
Hot Dogs, Horseshoes & Hand Grenades
Garry's Mod, but in VR, and single-player
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.