Single-player games like Deadly Cosmic
Below are 8 single-player Steam games similar to Deadly Cosmic, 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 Deadly Cosmic page.
Ranked picks
- 1

H.A.D.E.S Zero
Single-player alternative to Deadly Cosmic — playable solo, no multiplayer required. Shares Action and Indie with Deadly Cosmic.
Survival horror where you explore collapsed facilities, face biotechnological horrors, and survive with limited resources.
- 2

Anomalous Zone ███
Single-player alternative to Deadly Cosmic — playable solo, no multiplayer required. Shares Action and Indie with Deadly Cosmic.
Containing breakthrough? Supernatural invasion? Space-time chaos? A serious supernatural event has occurred in ██████. You will play the role of an investigator involved in the incident, facing the unknown environment and defeating the terrifying enemy.
- 3

Resident Evil 4 (2005)
Single-player alternative to Deadly Cosmic — playable solo, no multiplayer required. Shares Action and Adventure with Deadly Cosmic.
(Release: 2014) Special agent Leon S. Kennedy is sent on a mission to rescue the U.S. President’s daughter who has been kidnapped.
- 4

Resident Evil Revelations
Single-player alternative to Deadly Cosmic — playable solo, no multiplayer required. Shares Action and Adventure with Deadly Cosmic.
Resident Evil® Revelations returns redefined for PC complete with high quality HD visuals, enhanced lighting effects and an immersive sound experience.
- 5

Daymare: 1998
Single-player alternative to Deadly Cosmic — playable solo, no multiplayer required. Shares Action and Indie with Deadly Cosmic.
DAYMARE: 1998 is a third-person survival horror game that recreates the mood of iconic titles from the '90s, with a fresh storyline. An incident that turns a small town into a deadly zone, three characters to play with and little time to find the truth, before its mutated citizens abruptly end your mission.
- 6

Beneath
Single-player alternative to Deadly Cosmic — playable solo, no multiplayer required. Shares Action and Adventure with Deadly Cosmic.
Beneath is a Lovecraft-inspired survival FPS. Scarce ammo, merciless enemies and a sense of the unknown combine in a 10+ hour, story-driven single player campaign, built for both veteran gamers and those seeking a challenging old school experience.
- 7

Zombie Army Trilogy
Single-player alternative to Deadly Cosmic — playable solo, no multiplayer required. Shares Action with Deadly Cosmic.
The cult horror shooter series comes to an apocalyptic conclusion with an epic new third chapter, a heart-pumping new horde mode, and remastered editions of the best-selling Nazi Zombie Army 1 & 2.
- 8

The Last of Us™ Part I
Single-player alternative to Deadly Cosmic — playable solo, no multiplayer required. Shares Action and Adventure with Deadly Cosmic.
Discover the award-winning game that inspired the critically acclaimed television show. Guide Joel and Ellie through a post-apocalyptic America, and encounter unforgettable allies and enemies in The Last of Us™.