Like more than one of them
24 games close to two or more of Particula, Garry's Mod and Left 4 Dead 2
Bloons TD5
Particula, but four times the hours, and even better loved
Loved · 95%Tower Defense · StrategyAlso like Garry's Mod
SCP: Secret Laboratory
Left 4 Dead 2, but free to play
Loved · 91%FPS · Survival HorrorAlso like Garry's Mod
Sanctum 2
Particula, but a first-person shooter, and sci-fi
Loved · 90%Tower Defense · StrategyAlso like Garry's Mod and Left 4 Dead 2
Orcs Must Die! 2
Particula, but a third-person shooter, and three times the hours
Loved · 92%Tower Defense · Co-opAlso like Garry's Mod
Yet Another Zombie Defense
Particula, but a top-down shooter, and about survival
Liked · 87%Tower Defense · Co-opAlso like Left 4 Dead 2
Sanctum
Particula, but a first-person shooter, and twice the hours
Liked · 89%Tower Defense · StrategyAlso 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
Plants vs. Zombies: Game of the Year
Particula, but solo, and with zombies
Loved · 98%Tower Defense · StrategyAlso like Left 4 Dead 2
Ultimate Zombie Defense
Particula, but a top-down shooter, and gorier
Liked · 85%Tower Defense · Co-opAlso like Left 4 Dead 2
7 Days to Die
Garry's Mod, but a base builder, and about survival
Liked · 87%Building · SandboxAlso 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
Bloons TD Battles
Particula, but free to play, and competitive
Loved · 91%Tower Defense · StrategyAlso like Garry's Mod
Totally Accurate Battlegrounds
Garry's Mod, but free to play, and a battle royale
Liked · 88%Physics · SandboxAlso like Left 4 Dead 2
Unturned
Left 4 Dead 2, but a survival crafting game
Loved · 91%Zombies · SurvivalAlso 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
Evolve Stage 2
Left 4 Dead 2, but sci-fi, and more divisive
Mixed · 70%FPS · Team-BasedAlso like Garry's Mod
Mindustry
Particula, but an automation game, and six times the hours
Loved · 96%Tower Defense · StrategyAlso like Garry's Mod
Orcs Must Die! 3
Particula, but a third-person shooter, and three times the hours
Liked · 86%Tower Defense · StrategyAlso like Garry's Mod
More like Particula
3 games closest to Particula of your picks
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
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.