Like more than one of them
22 games close to two or more of Megaquarium, Garry's Mod and Left 4 Dead 2
Planet Coaster
Megaquarium, but funny, and realistic
Loved · 91%Building · ManagementAlso like Garry's Mod
Prison Architect
Megaquarium, but with base building, and top-down
Liked · 85%Building · ManagementAlso like Garry's Mod
Raft
Megaquarium, but a survival crafting game, and co-op
Loved · 93%Underwater · BuildingAlso like Garry's Mod
Fireworks Mania - An Explosive Simulator
Garry's Mod, but a hobby sim, and a tenth of the hours
Loved · 97%Sandbox · PhysicsAlso like Megaquarium
Ravenfield
Garry's Mod, but single-player, and a third of the hours
Loved · 97%Sandbox · FPSAlso like Left 4 Dead 2
Supermarket Together
Megaquarium, but free to play, and a third of the hours
Loved · 94%Management · EconomyAlso like Garry's Mod
Blockland
Garry's Mod, but open world, and a quarter of the hours
Mixed · 74%Building · SandboxAlso like Left 4 Dead 2
Waterpark Simulator
Megaquarium, but a job sim, and co-op
Loved · 96%Management · BuildingAlso like Garry's Mod
Depth
Left 4 Dead 2, but underwater, and half the hours
Liked · 88%Team-Based · ShooterAlso like Garry's Mod
Palworld
Megaquarium, but open world, and about survival
Loved · 95%Creature Collector · BuildingAlso like Garry's Mod
SCP: Secret Laboratory
Left 4 Dead 2, but free to play
Loved · 91%FPS · Survival HorrorAlso like Garry's Mod
Counter-Strike Nexon
Left 4 Dead 2, but free to play, and PvP
Mixed · 67%Zombies · FPSAlso like Garry's Mod
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
Mutilate-a-Doll 2
Garry's Mod, but single-player, and relaxing
Loved · 93%Physics · SandboxAlso like Megaquarium
Slime Rancher 2
Megaquarium, but a farming sim, and half the hours
Loved · 95%Creature Collector · BuildingAlso 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
More like Megaquarium
2 games closest to Megaquarium of your picks
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
Hot Dogs, Horseshoes & Hand Grenades
Garry's Mod, but in VR, and half the hours
Loved · 97%Physics · Sandbox
More like Left 4 Dead 2
1 games closest to Left 4 Dead 2 of your picks
Project Zomboid
Left 4 Dead 2, but a survival crafting game, and twice the hours
Loved · 94%Zombies · Survival
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.