Single-player games like D.E.C.A.Y.
Below are 9 single-player Steam games similar to D.E.C.A.Y., ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like D.E.C.A.Y. page.
Ranked picks
- 1

Z.O.N.A: Origin
Single-player alternative to D.E.C.A.Y. — playable solo, no multiplayer required. Shares Action and Indie with D.E.C.A.Y..
Z.O.N.A: Origin is an immersive adventure in a harsh post-apocalyptic world. Dive into a captivating story, explore a stunning open world, avoid dangerous anomalies, and hunt for powerful artifacts. Every choice you make can be decisive in this unpredictable world.
- 2

Metro: Last Light Redux
Single-player alternative to D.E.C.A.Y. — playable solo, no multiplayer required. Shares Action with D.E.C.A.Y..
It is the year 2034. Beneath the ruins of post-apocalyptic Moscow, in the tunnels of the Metro, the remnants of mankind are besieged by deadly threats from outside – and within. Mutants stalk the catacombs beneath the desolate surface, and hunt amidst the poisoned skies above.
- 3

CONVRGENCE
Single-player alternative to D.E.C.A.Y. — playable solo, no multiplayer required. Shares Action with D.E.C.A.Y..
CONVRGENCE is an atmospheric VR extraction shooter set in the procedurally generated, ever-changing Chernokamensk Anomaly Zone. Scavenge loot, fight bandits and hunt for mystical artifacts — all with your loyal dog companion by your side. But extract before nightfall, or face what lurks in the dark.
- 4

S.T.A.L.K.E.R.: Call of Pripyat
Single-player alternative to D.E.C.A.Y. — playable solo, no multiplayer required. Shares Action and RPG with D.E.C.A.Y..
S.T.A.L.K.E.R.: Call of Pripyat is the direct sequel of the S.T.A.L.K.E.R.: Shadow of Chernobyl. As a Major Alexander Degtyarev you should investigate the crash of the governmental helicopters around the Zone and find out, what happened there.
- 5

Into the Radius 2
Single-player alternative to D.E.C.A.Y. — playable solo, no multiplayer required. Shares Action and Indie with D.E.C.A.Y..
Into the Radius 2 is an immersive VR survival shooter, set in a realm of surreal landscapes and deadly entities known as Pechorsk Anomaly. Arm yourself with realistic weapons and venture deeper into the mysteries that lie within, either solo or with a friend by your side.
- 6

Bad 2 Bad: Apocalypse
Single-player alternative to D.E.C.A.Y. — playable solo, no multiplayer required. Shares Action and Indie with D.E.C.A.Y..
The open-world survival role-playing game "Bad 2 Bad: Apocalypse" tells the story of Delta Team and his comrades as they work to rebuild a world devastated by humans and their race turned into zombies.
- 7

Fallout 4 VR
Single-player alternative to D.E.C.A.Y. — playable solo, no multiplayer required. Shares RPG with D.E.C.A.Y..
Fallout 4, the legendary post-apocalyptic adventure from Bethesda Game Studios and winner of more than 200 ‘Best Of’ awards, including the DICE and BAFTA Game of the Year, comes in its entirety to VR.
- 8

ZERO Sievert
Single-player alternative to D.E.C.A.Y. — playable solo, no multiplayer required. Shares Action and Indie with D.E.C.A.Y..
Now with over 600,000 copies sold, ZERO Sievert is a tense top-down extraction shooter that challenges you to scavenge a procedurally-generated wasteland, loot gear, and explore what’s left of a devastated world. When the odds are stacked against you, you’ll need to do more than just survive...
- 9

Z.O.N.A Project X VR
Single-player alternative to D.E.C.A.Y. — playable solo, no multiplayer required. Shares Action and RPG with D.E.C.A.Y..
Z.O.N.A Project X - thrilling single-player VR shooter. Explore Chornobyl's exclusion zone, a hazardous apocalyptic world filled with anomalies. Survive using your weapons, scavenge for resources, and save humanity from doom.