Like more than one of them
8 games close to two or more of Costume Quest, Garry's Mod and Euro Truck Simulator 2
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
Construction Simulator
Euro Truck Simulator 2, but co-op, and a third of the hours
Liked · 80%Transportation · DrivingAlso like Garry's Mod
Worms Armageddon
Costume Quest, but a turn-based tactics game, and 2D
Loved · 94%Turn-Based · Turn-Based StrategyAlso 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
Turbo Dismount
Garry's Mod, but single-player, and with driving
Loved · 94%Physics · SandboxAlso like Euro Truck Simulator 2
RoadCraft
Euro Truck Simulator 2, but not open world, and half the hours
Mixed · 75%Driving · TransportationAlso like Garry's Mod
Scribblenauts Unlimited
Costume Quest, but open world, and 2D
Loved · 94%Comedy · PuzzleAlso like Garry's Mod
More like Costume Quest
5 games closest to Costume Quest of your picks
Pit People
Costume Quest, but a turn-based tactics game, and co-op
Loved · 93%Turn-Based Combat · Comedy
South Park: The Stick of Truth
Costume Quest, but 2D, and even better loved
Loved · 98%Comedy · Turn-Based
Wartales
Costume Quest, but medieval, and five times the hours
Liked · 85%Turn-Based Strategy · Turn-Based Combat
More like Garry's Mod
16 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
Fun with Ragdolls: The Game
Garry's Mod, but 3D, and a tenth of the hours
Liked · 88%Physics · Sandbox
Scrap Mechanic
Garry's Mod, but a survival crafting game, and with base building
Loved · 92%Building · Physics
Totally Accurate Battle Simulator
Garry's Mod, but an auto battler, and a third of the hours
Loved · 98%Sandbox · Physics
Just Cause 2
Garry's Mod, but a third-person shooter, and a quarter of the hours
Loved · 91%Sandbox · Physics
Just Cause 3
Garry's Mod, but a third-person shooter, and a third of the hours
Liked · 84%Physics · Sandbox
Hot Dogs, Horseshoes & Hand Grenades
Garry's Mod, but in VR, and half the hours
Loved · 97%Physics · Sandbox
Grand Theft Auto V Enhanced
Garry's Mod, but third-person, and more divisive
Liked · 83%Sandbox · Shooter
More like Euro Truck Simulator 2
1 games closest to Euro Truck Simulator 2 of your picks
Motor Town: Behind The Wheel
Much the same as Euro Truck Simulator 2
Loved · 94%Transportation · Driving
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.