Like more than one of them
10 games close to two or more of Europa Universalis III, 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
Totally Accurate Battle Simulator
Garry's Mod, but an auto battler, and a third of the hours
Loved · 98%Sandbox · PhysicsAlso like Europa Universalis III
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
RollerCoaster Tycoon 3: Platinum!
Garry's Mod, but a management game, and real-time with pause
Loved · 92%Building · SandboxAlso like Europa Universalis III
Railroads Online
Euro Truck Simulator 2, but co-op, and more divisive
Mixed · 75%Automobile Sim · DrivingAlso like Garry's Mod
Farming Simulator 15
Euro Truck Simulator 2, but co-op
Loved · 93%Automobile Sim · DrivingAlso like Garry's Mod
MudRunner
Garry's Mod, but a driving sim, and a quarter of the hours
Loved · 92%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
Automation - The Car Company Tycoon Game
Garry's Mod, but a driving sim, and half the hours
Loved · 94%Building · SandboxAlso like Euro Truck Simulator 2
More like Europa Universalis III
6 games closest to Europa Universalis III of your picks
Crusader Kings II
Europa Universalis III, but free to play, and three times the hours
Loved · 91%Grand Strategy · Political Sim
Manor Lords
Europa Universalis III, but a city builder, and a third of the hours
Liked · 84%Grand Strategy · Historical
More like Garry's Mod
10 games closest to Garry's Mod of your picks
Scrap Mechanic
Garry's Mod, but a survival crafting game, and with base building
Loved · 92%Building · Physics
Fireworks Mania - An Explosive Simulator
Garry's Mod, but a hobby sim, and a tenth of the hours
Loved · 97%Sandbox · Physics
More like Euro Truck Simulator 2
4 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
Forza Horizon 6
Euro Truck Simulator 2, but half the hours, and more divisive
Liked · 81%Driving · Automobile Sim
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.