Like more than one of them
26 games close to two or more of Rollerdrome, Garry's Mod and Left 4 Dead 2
Robot Roller-Derby Disco Dodgeball
Rollerdrome, but PvP, and competitive
Loved · 93%Skating · Arena ShooterAlso like Left 4 Dead 2
Splitgate
Garry's Mod, but free to play, and an arena shooter
Loved · 91%FPS · PhysicsAlso like Rollerdrome and Left 4 Dead 2
Just Cause 2
Garry's Mod, but a third-person shooter, and a quarter of the hours
Loved · 91%Sandbox · PhysicsAlso like Rollerdrome
World War Z
Left 4 Dead 2, but more divisive
Liked · 82%Zombies · Online Co-OpAlso like Rollerdrome and Garry's Mod
SCP: Secret Laboratory
Left 4 Dead 2, but free to play
Loved · 91%FPS · Survival HorrorAlso like Garry's Mod
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
Serious Sam 4
Rollerdrome, but co-op, and twice the hours
Liked · 83%Arena Shooter · ShooterAlso like Garry's Mod and Left 4 Dead 2
Saints Row: The Third
Garry's Mod, but open world, and half the hours
Loved · 96%Sandbox · ComedyAlso like Rollerdrome
Shotgun Farmers
Garry's Mod, but team-based, and a tenth of the hours
Loved · 93%FPS · ShooterAlso like Rollerdrome and Left 4 Dead 2
Ravenfield
Garry's Mod, but single-player, and a third of the hours
Loved · 97%Sandbox · FPSAlso like Left 4 Dead 2
Sker Ritual
Left 4 Dead 2, but story-rich, and a quarter of the hours
Liked · 81%Zombies · FPSAlso like Rollerdrome and Garry's Mod
Just Cause 3
Garry's Mod, but a third-person shooter, and a third of the hours
Liked · 84%Physics · SandboxAlso like Rollerdrome
Counter-Strike Nexon
Left 4 Dead 2, but free to play, and PvP
Mixed · 67%Zombies · FPSAlso like Garry's Mod
Zero Hour
Garry's Mod, but a tenth of the hours, and more divisive
Mixed · 77%FPS · ShooterAlso like Left 4 Dead 2 and Rollerdrome
THE FINALS
Left 4 Dead 2, but competitive, and with destruction
Mixed · 78%FPS · Team-BasedAlso like Garry's Mod and Rollerdrome
STAR WARS Battlefront II
Rollerdrome, but in space, and three times the hours
Liked · 88%Third-Person Shooter · ShooterAlso like Garry's Mod and Left 4 Dead 2
How to Fish
Garry's Mod, but with fishing, and a tenth of the hours
Loved · 95%Physics · Online Co-OpAlso like Left 4 Dead 2
Grapples Galore
Rollerdrome, but free to play, and physics-driven
Loved · 91%Arena Shooter · Third-Person ShooterAlso like Garry's Mod
Double Action: Boogaloo
Garry's Mod, but free to play, and with parkour
Loved · 93%FPS · ShooterAlso like Rollerdrome and Left 4 Dead 2
Serious Sam 2
Garry's Mod, but a boomer shooter, and gorier
Loved · 90%FPS · ComedyAlso like Left 4 Dead 2
More like Garry's Mod
4 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
Hot Dogs, Horseshoes & Hand Grenades
Garry's Mod, but in VR, and single-player
Loved · 97%Physics · Sandbox
Fireworks Mania - An Explosive Simulator
Garry's Mod, but a hobby sim, and 3D
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.