Like more than one of them
30 games close to two or more of Cepheus Protocol, Red Dead Redemption 2 and Left 4 Dead 2
State of Decay 2
Cepheus Protocol, but co-op, and twice the hours
Liked · 83%Zombies · Post-apocalypticAlso like Left 4 Dead 2
State of Decay
Cepheus Protocol, but third-person
Liked · 85%Zombies · Post-apocalypticAlso like Left 4 Dead 2
Fallout: New Vegas
Red Dead Redemption 2, but an action RPG, and single-player
Loved · 96%Western · Open worldAlso like Cepheus Protocol and Left 4 Dead 2
Project Zomboid
Cepheus Protocol, but with crafting, and four times the hours
Loved · 94%Zombies · Post-apocalypticAlso like Left 4 Dead 2
VEIN
Cepheus Protocol, but co-op, and with crafting
Liked · 87%Zombies · Post-apocalypticAlso 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 Cepheus Protocol
World War Z
Left 4 Dead 2, but more divisive
Liked · 82%Zombies · Online Co-OpAlso like Cepheus Protocol
Tom Clancy's Ghost Recon Wildlands
Cepheus Protocol, but a third-person shooter, and a stealth game
Mixed · 78%Open world · TacticalAlso like Red Dead Redemption 2 and Left 4 Dead 2
No One Survived
Cepheus Protocol, but with crafting, and co-op
Divisive · 64%Zombies · Post-apocalypticAlso like Left 4 Dead 2
Resident Evil Village
Cepheus Protocol, but a first-person shooter, and horror
Loved · 96%Zombies · Survival HorrorAlso like Left 4 Dead 2
BLOCKADE 3D
Cepheus Protocol, but a first-person shooter, and pixel art
Divisive · 59%Zombies · BuildingAlso like Left 4 Dead 2
The Evil Within 2
Cepheus Protocol, but a third-person shooter, and psychological horror
Loved · 92%Zombies · Survival HorrorAlso like Left 4 Dead 2
Zombie Panic! Source
Left 4 Dead 2, but free to play, and half the hours
Liked · 85%Zombies · FPSAlso like Cepheus Protocol
Zombie Army Trilogy
Cepheus Protocol, but a third-person shooter, and set in World War II
Liked · 86%Zombies · Post-apocalypticAlso like Left 4 Dead 2
Fallout 4
Red Dead Redemption 2, but an action RPG, and post-apocalyptic
Liked · 81%Open world · ShooterAlso like Cepheus Protocol and Left 4 Dead 2
Resident Evil Revelations
Left 4 Dead 2, but third-person, and more divisive
Liked · 81%Zombies · Survival HorrorAlso like Cepheus Protocol
Lambda Wars
Cepheus Protocol, but free to play, and sci-fi
Loved · 92%RTS · ZombiesAlso like Left 4 Dead 2
Rust
Cepheus Protocol, but PvP, and 13 times the hours
Liked · 87%Survival · BuildingAlso like Left 4 Dead 2
Counter-Strike Nexon
Left 4 Dead 2, but free to play, and PvP
Mixed · 67%Zombies · FPSAlso like Cepheus Protocol
Propagation VR
Left 4 Dead 2, but in VR, and a tenth of the hours
Loved · 94%Zombies · FPSAlso like Cepheus Protocol
Walking Zombie 2
Cepheus Protocol, but a first-person shooter
Liked · 87%Zombies · Post-apocalypticAlso like Left 4 Dead 2
S.T.A.L.K.E.R.: Shadow of Chernobyl
Cepheus Protocol, but horror, and even better loved
Loved · 95%Post-apocalyptic · SurvivalAlso like Left 4 Dead 2
Metro 2033 Redux
Cepheus Protocol, but story-rich, and first-person
Loved · 92%Post-apocalyptic · SurvivalAlso like Left 4 Dead 2
Dead Rising 2: Off the Record
Cepheus Protocol, but a hack and slash game, and funny
Mixed · 77%Zombies · SandboxAlso like Left 4 Dead 2
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.