Like more than one of them
28 games close to two or more of Defense Grid 2, Garry's Mod and Left 4 Dead 2
Scrap Mechanic
Garry's Mod, but a survival crafting game, and with base building
Loved · 92%Building · PhysicsAlso like Defense Grid 2
Space Engineers
Garry's Mod, but a survival crafting game, and in space
Liked · 89%Building · SandboxAlso like Defense Grid 2
SCP: Secret Laboratory
Left 4 Dead 2, but free to play
Loved · 91%FPS · Survival HorrorAlso like Garry's Mod
Evolve Stage 2
Defense Grid 2, but free to play, and a first-person shooter
Mixed · 70%Aliens · Sci-fiAlso like Left 4 Dead 2 and Garry's Mod
Sanctum 2
Defense Grid 2, but a first-person shooter, and half the hours
Loved · 90%Tower Defense · AliensAlso like Garry's Mod and Left 4 Dead 2
Mindustry
Defense Grid 2, but an automation game, and even better loved
Loved · 96%Tower Defense · Base BuildingAlso like Garry's Mod
Serious Sam 3: BFE
Defense Grid 2, but funny, and gorier
Liked · 88%Aliens · Local Co-OpAlso like Garry's Mod and Left 4 Dead 2
7 Days to Die
Garry's Mod, but a base builder, and about survival
Liked · 87%Building · SandboxAlso like Left 4 Dead 2 and Defense Grid 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
Arma 3
Garry's Mod, but a wargame, and military
Loved · 90%Sandbox · FPSAlso like Left 4 Dead 2 and Defense Grid 2
Ravenfield
Garry's Mod, but single-player, and a third of the hours
Loved · 97%Sandbox · FPSAlso like Left 4 Dead 2
Halo: The Master Chief Collection
Defense Grid 2, but story-rich, and first-person
Loved · 92%Aliens · Sci-fiAlso like Garry's Mod and Left 4 Dead 2
The Planet Crafter
Defense Grid 2, but a survival crafting game, and twice the hours
Loved · 96%Base Building · BuildingAlso like Garry's Mod
Sanctum
Defense Grid 2, but a first-person shooter
Liked · 89%Tower Defense · Sci-fiAlso like Garry's Mod and Left 4 Dead 2
PlanetSide 2
Garry's Mod, but free to play, and an MMO
Liked · 80%FPS · ShooterAlso like Left 4 Dead 2 and Defense Grid 2
Insurgency: Sandstorm
Garry's Mod, but half the hours, and more divisive
Liked · 85%FPS · ShooterAlso like Left 4 Dead 2
Bloons TD5
Defense Grid 2, but 2D, and even better loved
Loved · 95%Tower Defense · StrategyAlso like Garry's Mod
Space Hulk: Deathwing - Enhanced Edition
Defense Grid 2, but half the hours, and more divisive
Mixed · 72%Aliens · Sci-fiAlso like Garry's Mod and Left 4 Dead 2
Core Keeper
Garry's Mod, but open world, and with crafting
Loved · 93%Sandbox · BuildingAlso like Defense Grid 2
Splitgate
Garry's Mod, but free to play, and an arena shooter
Loved · 91%FPS · PhysicsAlso like Left 4 Dead 2
GROUND BRANCH
Garry's Mod, but military, and a quarter of the hours
Liked · 84%FPS · ShooterAlso like Left 4 Dead 2
Call of Duty: Black Ops II
Left 4 Dead 2, but a quarter of the hours, and more divisive
Liked · 86%FPS · Team-BasedAlso like Garry's Mod
Call of Duty: Modern Warfare 2 (2009)
Garry's Mod, but military, and a fifth of the hours
Loved · 93%FPS · ShooterAlso like Left 4 Dead 2
Counter-Strike Nexon
Left 4 Dead 2, but free to play, and PvP
Mixed · 67%Zombies · FPSAlso like Garry's Mod
More like Defense Grid 2
1 games closest to Defense Grid 2 of your picks
More like Left 4 Dead 2
1 games closest to Left 4 Dead 2 of your picks
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.