Like more than one of them
29 games close to two or more of HELLION, Garry's Mod and Left 4 Dead 2
Space Engineers
HELLION, but co-op, and four times the hours
Liked · 89%Space · Space SimAlso like Garry's Mod
Scrap Mechanic
Garry's Mod, but a survival crafting game, and with base building
Loved · 92%Building · PhysicsAlso like HELLION
No More Room in Hell
Left 4 Dead 2, but free to play, and half the hours
Loved · 90%Zombies · SurvivalAlso like HELLION and Garry's Mod
Kerbal Space Program
HELLION, but single-player, and four times the hours
Loved · 96%Space · Space SimAlso like Garry's Mod
Empyrion - Galactic Survival
HELLION, but co-op, and six times the hours
Mixed · 78%Space · Space SimAlso like Garry's Mod
Unturned
Left 4 Dead 2, but free to play, and a survival crafting game
Loved · 91%Zombies · SurvivalAlso like HELLION and Garry's Mod
SCP: Secret Laboratory
Left 4 Dead 2, but free to play
Loved · 91%FPS · Survival HorrorAlso like Garry's Mod
Fireworks Mania - An Explosive Simulator
Garry's Mod, but a hobby sim, and a tenth of the hours
Loved · 97%Sandbox · PhysicsAlso like HELLION
Just Cause 2
Garry's Mod, but a third-person shooter, and a quarter of the hours
Loved · 91%Sandbox · PhysicsAlso like HELLION
Ravenfield
Garry's Mod, but single-player, and a third of the hours
Loved · 97%Sandbox · FPSAlso like Left 4 Dead 2
Goat Simulator 3
Garry's Mod, but open world, and a fifth of the hours
Loved · 98%Physics · SandboxAlso like HELLION
Sons Of The Forest
HELLION, but a survival horror game, and with crafting
Liked · 88%Survival · Open worldAlso like Garry's Mod and Left 4 Dead 2
PlanetSide 2
HELLION, but free to play, and three times the hours
Liked · 80%Massively Multiplayer · SpaceAlso like Garry's Mod and Left 4 Dead 2
State of Decay 2
Left 4 Dead 2, but a base builder, and open world
Liked · 83%Zombies · SurvivalAlso like HELLION
Green Hell
HELLION, but with crafting, and co-op
Liked · 85%Survival · Open worldAlso like Garry's Mod and Left 4 Dead 2
Starbound
HELLION, but pixel art, and four times the hours
Loved · 90%Space · SurvivalAlso like Garry's Mod
7 Days to Die
Garry's Mod, but a base builder, and about survival
Liked · 87%Building · SandboxAlso like Left 4 Dead 2 and HELLION
Far Cry
Garry's Mod, but harder, and stealthy
Liked · 82%FPS · SandboxAlso like HELLION and Left 4 Dead 2
Deadside
HELLION, but PvP, and post-apocalyptic
Mixed · 76%Survival · Massively MultiplayerAlso like Garry's Mod and 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 and HELLION
Kerbal Space Program 2
HELLION, but harder, and more divisive
Disliked · 26%Space · Space SimAlso like Garry's Mod
Core Keeper
Garry's Mod, but a survival crafting game, and pixel art
Loved · 93%Sandbox · BuildingAlso like HELLION
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
Subsistence
Garry's Mod, but a base builder, and with crafting
Mixed · 72%Building · SandboxAlso like HELLION and Left 4 Dead 2
More like Garry's Mod
1 games closest to Garry's Mod of your picks
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.