Like more than one of them
18 games close to two or more of Alien Shooter, Terraria and Left 4 Dead 2
Project Zomboid
Terraria, but with zombies, and post-apocalyptic
Loved · 94%Open World Survival Craft · SurvivalAlso like Left 4 Dead 2
Unturned
Left 4 Dead 2, but free to play, and a survival crafting game
Loved · 91%Zombies · SurvivalAlso like Terraria
Alien Swarm
Alien Shooter, but free to play, and co-op
Loved · 95%Aliens · Top-Down ShooterAlso like Left 4 Dead 2
Don't Starve Together
Terraria, but harder, and half the hours
Loved · 95%Open World Survival Craft · SurvivalAlso like Left 4 Dead 2
SAS: Zombie Assault 4
Alien Shooter, but with zombies, and three times the hours
Liked · 86%Top-Down Shooter · Top-DownAlso like Left 4 Dead 2
The Forest
Terraria, but a survival horror game, and a quarter of the hours
Loved · 96%Open World Survival Craft · SurvivalAlso like Left 4 Dead 2
Grounded
Terraria, but with base building, and a third of the hours
Loved · 90%Open World Survival Craft · SurvivalAlso like Left 4 Dead 2
Aliens: Fireteam Elite
Alien Shooter, but three times the hours, and more divisive
Liked · 80%Aliens · ShooterAlso like Left 4 Dead 2
Rust
Terraria, but a base builder, and PvP
Liked · 87%Open World Survival Craft · SurvivalAlso like Left 4 Dead 2
Dead Island Definitive Edition
Left 4 Dead 2, but an action RPG, and open world
Liked · 82%Zombies · SurvivalAlso like Terraria
Yet Another Zombie Defense
Alien Shooter, but a tower defense game, and about survival
Liked · 87%Top-Down · ShooterAlso like Left 4 Dead 2
Dying Light
Left 4 Dead 2, but with parkour, and open world
Loved · 95%Zombies · Survival HorrorAlso like Terraria
HumanitZ
Left 4 Dead 2, but a survival crafting game, and with base building
Mixed · 74%Zombies · SurvivalAlso like Terraria
Deadside
Terraria, but a first-person shooter, and a quarter of the hours
Mixed · 76%Open World Survival Craft · SurvivalAlso like Left 4 Dead 2
Aliens vs. Predator
Alien Shooter, but stealthy, and first-person
Loved · 91%Aliens · ShooterAlso like Left 4 Dead 2
Tom Clancy's The Division
Alien Shooter, but open world, and 12 times the hours
Mixed · 71%Looter Shooter · ShooterAlso like Left 4 Dead 2
7 Days to Die
Terraria, but a base builder, and made of voxels
Liked · 87%Open World Survival Craft · SurvivalAlso like Left 4 Dead 2
BrainBread 2
Alien Shooter, but free to play, and a survival game
Mixed · 73%Shooter · HorrorAlso like Left 4 Dead 2
More like Terraria
5 games closest to Terraria of your picks
Conan Exiles Enhanced
Terraria, but an MMO, and more divisive
Mixed · 79%Open World Survival Craft · Survival
Once Human
Terraria, but free to play, and a third-person shooter
Mixed · 79%Open World Survival Craft · Survival
Abiotic Factor
Terraria, but co-op, and with base building
Loved · 96%Open World Survival Craft · Survival
More like Left 4 Dead 2
7 games closest to Left 4 Dead 2 of your picks
No More Room in Hell
Left 4 Dead 2, but free to play, and half the hours
Loved · 90%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.