Like more than one of them
17 games close to two or more of Boundless, Left 4 Dead 2 and Euro Truck Simulator 2
The Forest
Boundless, but a survival horror game, and even better loved
Loved · 96%Open World Survival Craft · CraftingAlso like Left 4 Dead 2
Project Zomboid
Boundless, but with zombies, and twice the hours
Loved · 94%Open World Survival Craft · CraftingAlso like Left 4 Dead 2
Unturned
Left 4 Dead 2, but free to play, and a survival crafting game
Loved · 91%Zombies · SurvivalAlso like Boundless
Don't Starve Together
Boundless, but co-op, and harder
Loved · 95%Open World Survival Craft · CraftingAlso like Left 4 Dead 2
Grounded
Boundless, but with base building, and horror
Loved · 90%Open World Survival Craft · CraftingAlso like Left 4 Dead 2
Green Hell
Boundless, but with base building, and co-op
Liked · 85%Open World Survival Craft · CraftingAlso like Left 4 Dead 2
7 Days to Die
Boundless, but a base builder, and three times the hours
Liked · 87%Open World Survival Craft · VoxelAlso like Left 4 Dead 2
Miscreated
Boundless, but PvP, and post-apocalyptic
Mixed · 66%Open World Survival Craft · Massively MultiplayerAlso like Left 4 Dead 2
Sons Of The Forest
Boundless, but a survival horror game, and with base building
Liked · 88%Crafting · SurvivalAlso like Left 4 Dead 2
Rust
Boundless, but PvP, and seven times the hours
Liked · 87%Open World Survival Craft · CraftingAlso like Left 4 Dead 2
SCUM
Boundless, but realistic, and twice the hours
Mixed · 74%Open World Survival Craft · Massively MultiplayerAlso like Left 4 Dead 2
Will To Live Online
Boundless, but free to play, and a first-person shooter
Mixed · 69%Open World Survival Craft · MMORPGAlso like Left 4 Dead 2
Drive Beyond Horizons
Euro Truck Simulator 2, but a survival game, and a third of the hours
Mixed · 78%Driving · Automobile SimAlso like Left 4 Dead 2
Dead Rising 3
Boundless, but a hack and slash game, and funny
Mixed · 77%Open World Survival Craft · CraftingAlso like Left 4 Dead 2
Deadside
Boundless, but a first-person shooter, and post-apocalyptic
Mixed · 76%Open World Survival Craft · CraftingAlso like Left 4 Dead 2
Subsistence
Boundless, but a base builder
Mixed · 72%Open World Survival Craft · CraftingAlso like Left 4 Dead 2
More like Boundless
10 games closest to Boundless of your picks
Starbound
Boundless, but pixel art, and twice the hours
Loved · 90%Open World Survival Craft · Crafting
Conan Exiles Enhanced
Boundless, but four times the hours
Mixed · 79%Open World Survival Craft · Massively Multiplayer
Once Human
Boundless, but free to play, and a third-person shooter
Mixed · 79%Open World Survival Craft · Crafting
The Planet Crafter
Boundless, but single-player, and even better loved
Loved · 96%Open World Survival Craft · Crafting
More like Left 4 Dead 2
3 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
Dead Island Definitive Edition
Left 4 Dead 2, but an action RPG, and open world
Liked · 82%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.