Like more than one of them
22 games close to two or more of Cat Quest III, Garry's Mod and Left 4 Dead 2
Goat Simulator 3
Garry's Mod, but open world, and a fifth of the hours
Loved · 98%Physics · SandboxAlso like Cat Quest III
Borderlands 2
Cat Quest III, but a looter shooter, and four times the hours
Loved · 90%Loot · Action RPGAlso like Garry's Mod
Fallout 3 - Game of the Year Edition
Cat Quest III, but solo, and first-person
Liked · 82%Open world · Action RPGAlso like Garry's Mod and Left 4 Dead 2
Borderlands: The Pre-Sequel
Garry's Mod, but a looter shooter, and an action RPG
Mixed · 79%FPS · ComedyAlso like Cat Quest III and Left 4 Dead 2
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
Far Cry 4
Garry's Mod, but open world, and half the hours
Liked · 85%FPS · SandboxAlso like Left 4 Dead 2
Bang-On Balls: Chronicles
Cat Quest III, but a 3D platformer, and split-screen
Loved · 96%Local Co-Op · CombatAlso like Garry's Mod
SCP: Secret Laboratory
Left 4 Dead 2, but free to play
Loved · 91%FPS · Survival HorrorAlso like Garry's Mod
Enshrouded
Cat Quest III, but a survival crafting game, and a base builder
Liked · 86%Action RPG · Open worldAlso like Garry's Mod
Fallout: New Vegas
Garry's Mod, but an action RPG, and single-player
Loved · 96%FPS · SandboxAlso like Cat Quest III and Left 4 Dead 2
Slime Rancher
Cat Quest III, but a farming sim, and solo
Loved · 98%Exploration · Open worldAlso like Garry's Mod
Magicka 2
Cat Quest III, but co-op, and more divisive
Liked · 80%Local Co-Op · IsometricAlso like Garry's Mod and Left 4 Dead 2
Dying Light 2: Reloaded Edition
Cat Quest III, but with zombies, and three times the hours
Mixed · 79%Action RPG · CombatAlso like Left 4 Dead 2
Amazing Frog?
Garry's Mod, but split-screen, and a third of the hours
Loved · 94%Physics · SandboxAlso like Cat Quest III
Unturned
Left 4 Dead 2, but free to play, and a survival crafting game
Loved · 91%Zombies · SurvivalAlso 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
More like Cat Quest III
3 games closest to Cat Quest III of your picks
LEGO Pirates of the Caribbean The Video Game
Cat Quest III, but co-op, and funny
Loved · 91%Pirates · Local Co-Op
Torchlight II
Cat Quest III, but a hack and slash game, and twice the hours
Loved · 92%Action RPG · Loot
More like Garry's Mod
5 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
Just Cause 2
Garry's Mod, but a third-person shooter, and a quarter of the hours
Loved · 91%Sandbox · Physics
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.