Like more than one of them
9 games close to two or more of Heartbound, Euro Truck Simulator 2 and 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
BeamNG.drive
Euro Truck Simulator 2, but physics-driven, and with destruction
Loved · 97%Driving · Automobile SimAlso 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
Junkyard Simulator
Euro Truck Simulator 2, but a tenth of the hours, and more divisive
Mixed · 65%Automobile Sim · TransportationAlso 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
Donut County
Heartbound, but physics-driven
Loved · 92%Puzzle · Psychological HorrorAlso like Garry's Mod
RoadCraft
Euro Truck Simulator 2, but not open world, and half the hours
Mixed · 75%Driving · TransportationAlso like Garry's Mod
Moonbase Alpha
Garry's Mod, but a job sim, and in space
Loved · 91%Sandbox · Online Co-OpAlso like Heartbound
Baby Steps
Heartbound, but a 3D platformer, and third-person
Loved · 90%Walking Simulator · Psychological HorrorAlso like Garry's Mod
More like Heartbound
6 games closest to Heartbound of your picks
The Death | Thần Trùng
Heartbound, but first-person, and realistic
Loved · 91%Psychological Horror · Walking Simulator
Turnip Boy Commits Tax Evasion
Heartbound, but top-down, and even better loved
Loved · 95%Psychological Horror · RPG
The Stanley Parable
Heartbound, but an interactive fiction game, and first-person
Loved · 92%Walking Simulator · Choices Matter
OneShot
Heartbound, but an interactive fiction game, and twice the hours
Loved · 98%Choices Matter · Puzzle
More like Euro Truck Simulator 2
2 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
More like Garry's Mod
13 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
Scrap Mechanic
Garry's Mod, but a survival crafting game, and with base building
Loved · 92%Building · Physics
Content Warning
Garry's Mod, but a horror game, and procedurally generated
Loved · 94%Physics · Online Co-Op
Just Cause 2
Garry's Mod, but a third-person shooter, and a quarter of the hours
Loved · 91%Sandbox · Physics
Fun with Ragdolls: The Game
Garry's Mod, but 3D, and a tenth of the hours
Liked · 88%Physics · Sandbox
Just Cause 3
Garry's Mod, but a third-person shooter, and a third of the hours
Liked · 84%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.