Like more than one of them
17 games close to two or more of Aven Colony, Garry's Mod and Left 4 Dead 2
Scrap Mechanic
Garry's Mod, but a survival crafting game, and with base building
Loved · 92%Building · PhysicsAlso like Aven Colony
Space Engineers
Garry's Mod, but a survival crafting game, and in space
Liked · 89%Building · SandboxAlso like Aven Colony
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
Prison Architect
Aven Colony, but top-down, and twice the hours
Liked · 85%Colony Sim · City BuilderAlso like Garry's Mod
Ravenfield
Garry's Mod, but single-player, and a third of the hours
Loved · 97%Sandbox · FPSAlso like Left 4 Dead 2
The Planet Crafter
Aven Colony, but a survival crafting game, and co-op
Loved · 96%Base Building · SpaceAlso 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
Unturned
Left 4 Dead 2, but free to play, and a survival crafting game
Loved · 91%Zombies · SurvivalAlso like Garry's Mod
Sons Of The Forest
Garry's Mod, but a survival horror game, and open world
Liked · 88%Building · SandboxAlso like Left 4 Dead 2
Counter-Strike Nexon
Left 4 Dead 2, but PvP, and more divisive
Mixed · 67%Zombies · FPSAlso like Garry's Mod
Green Hell
Garry's Mod, but with crafting, and a third of the hours
Liked · 85%Online Co-Op · SandboxAlso like Left 4 Dead 2
Subsistence
Garry's Mod, but a base builder, and half the hours
Mixed · 72%Building · SandboxAlso like Left 4 Dead 2
More like Aven Colony
11 games closest to Aven Colony of your picks
Oxygen Not Included
Aven Colony, but 2D, and four times the hours
Loved · 97%Colony Sim · Base Building
RimWorld
Aven Colony, but 11 times the hours, and even better loved
Loved · 98%Colony Sim · Base Building
Colony Survival
Aven Colony, but a tower defense game, and open world
Loved · 92%Colony Sim · City Builder
Timberborn
Aven Colony, but made of voxels, and three times the hours
Loved · 96%Colony Sim · City Builder
Manor Lords
Aven Colony, but a real-time tactics game, and historical
Liked · 84%City Builder · Colony Sim
More like Garry's Mod
1 games closest to Garry's Mod of your picks
Fireworks Mania - An Explosive Simulator
Garry's Mod, but a hobby sim, and a tenth of the hours
Loved · 97%Sandbox · Physics
More like Left 4 Dead 2
1 games closest to Left 4 Dead 2 of your picks
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.