Like more than one of them
26 games close to two or more of X-Morph: Defense, Garry's Mod and Left 4 Dead 2
Sanctum 2
X-Morph: Defense, but co-op, and first-person
Loved · 90%Tower Defense · AliensAlso like Garry's Mod and Left 4 Dead 2
SCP: Secret Laboratory
Left 4 Dead 2, but free to play
Loved · 91%FPS · Survival HorrorAlso like Garry's Mod
Evolve Stage 2
Left 4 Dead 2, but free to play, and more divisive
Mixed · 70%FPS · Team-BasedAlso like X-Morph: Defense and Garry's Mod
Serious Sam 3: BFE
X-Morph: Defense, but funny, and gorier
Liked · 88%Aliens · Local Co-OpAlso like Garry's Mod and Left 4 Dead 2
SAS: Zombie Assault 4
X-Morph: Defense, but with zombies, and 2D
Liked · 86%Top-Down Shooter · Twin Stick ShooterAlso like Left 4 Dead 2
Yet Another Zombie Defense
X-Morph: Defense, but about survival, and a fifth of the hours
Liked · 87%Tower Defense · Local Co-OpAlso like 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
Sanctum
X-Morph: Defense, but first-person, and co-op
Liked · 89%Tower Defense · Sci-fiAlso like Garry's Mod and 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
Alien Swarm
X-Morph: Defense, but free to play, and half the hours
Loved · 95%Aliens · Top-Down ShooterAlso like Left 4 Dead 2
Serious Sam HD: The First Encounter
Garry's Mod, but a boomer shooter, and a tenth of the hours
Loved · 93%FPS · ComedyAlso like X-Morph: Defense and Left 4 Dead 2
Half-Life: Alyx
X-Morph: Defense, but in VR, and solo
Loved · 98%Aliens · Sci-fiAlso like Left 4 Dead 2
Ultimate Zombie Defense
X-Morph: Defense, but with zombies, and a third of the hours
Liked · 85%Tower Defense · Top-Down ShooterAlso like 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
Halo: The Master Chief Collection
X-Morph: Defense, but story-rich, and first-person
Loved · 92%Aliens · Sci-fiAlso like Garry's Mod and Left 4 Dead 2
Space Hulk: Deathwing - Enhanced Edition
X-Morph: Defense, but more divisive
Mixed · 72%Aliens · Co-opAlso 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
Bloons TD5
X-Morph: Defense, but 2D, and even better loved
Loved · 95%Tower Defense · StrategyAlso like Garry's Mod
Orcs Must Die! 2
X-Morph: Defense, but third-person
Loved · 92%Tower Defense · StrategyAlso like Garry's Mod
Natural Selection 2
X-Morph: Defense, but team-based, and three times the hours
Liked · 85%Aliens · Sci-fiAlso like Left 4 Dead 2
Aliens: Colonial Marines
X-Morph: Defense, but horror, and in space
Divisive · 62%Aliens · Sci-fiAlso like Left 4 Dead 2 and Garry's Mod
More like X-Morph: Defense
1 games closest to X-Morph: Defense of your picks
More like Garry's Mod
3 games closest to Garry's Mod of your picks
Just Cause 2
Garry's Mod, but a third-person shooter, and a quarter of the hours
Loved · 91%Sandbox · Physics
Hot Dogs, Horseshoes & Hand Grenades
Garry's Mod, but in VR, and half the hours
Loved · 97%Physics · Sandbox
Scrap Mechanic
Garry's Mod, but a survival crafting game, and with base building
Loved · 92%Building · 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.