Like more than one of them
10 games close to two or more of Aven Colony, Garry's Mod and Euro Truck Simulator 2
Prison Architect
Aven Colony, but top-down, and twice the hours
Liked · 85%Colony Sim · City BuilderAlso like Garry's Mod
Space Engineers
Garry's Mod, but a survival crafting game, and with base building
Liked · 89%Building · SandboxAlso like Aven Colony
Scrap Mechanic
Garry's Mod, but about survival, and open world
Loved · 92%Building · PhysicsAlso like Aven Colony
Planet Coaster
Aven Colony, but relaxing, and funny
Loved · 91%City Builder · ManagementAlso like Garry's Mod
Cities: Skylines
Aven Colony, but three times the hours
Loved · 93%City Builder · ManagementAlso like Garry's Mod
Construction Simulator
Euro Truck Simulator 2, but co-op, and a third of the hours
Liked · 80%Transportation · DrivingAlso like Garry's Mod
BeamNG.drive
Euro Truck Simulator 2, but physics-driven, and with destruction
Loved · 97%Driving · Automobile SimAlso like Garry's Mod
My Summer Car
Euro Truck Simulator 2, but a survival game, and first-person
Loved · 95%Automobile Sim · DrivingAlso like Garry's Mod
Railroads Online
Euro Truck Simulator 2, but co-op, and more divisive
Mixed · 75%Automobile Sim · DrivingAlso like Garry's Mod
Two Point Museum
Garry's Mod, but a management game, and single-player
Loved · 95%Building · SandboxAlso like Aven Colony
More like Aven Colony
18 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
Manor Lords
Aven Colony, but a real-time tactics game, and historical
Liked · 84%City Builder · Colony Sim
Dyson Sphere Program
Aven Colony, but open world, and three times the hours
Loved · 97%Base Building · Space
Against the Storm
Aven Colony, but a roguelite, and three times the hours
Loved · 94%City Builder · Colony Sim
Jurassic World Evolution 2
Aven Colony, but with dinosaurs, and open world
Loved · 90%City Builder · Management
Empires of the Undergrowth
Aven Colony, but a real-time strategy game, and historical
Loved · 94%Colony Sim · City Builder
Workers & Resources: Soviet Republic
Aven Colony, but historical, and four times the hours
Loved · 91%City Builder · Colony Sim
More like Garry's Mod
2 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
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.