Single-player games like Species: Unknown
Below are 15 single-player Steam games similar to Species: Unknown, 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 Species: Unknown page.
Ranked picks
- 1
Project Corruption
Single-player alternative to Species: Unknown — playable solo, no multiplayer required. Shares Action and Indie with Species: Unknown.
Project Corruption throws you into the haunting walls of the I.B.I.S. space station as you respond to an S.O.S. signal in search of your wife. Uncover the stations dark secrets, confront monstrous horrors, and survive the aftermath of the failed experiments in immersive sci-fi horror experience.
- 2
Nuclear Nightmare
Single-player alternative to Species: Unknown — playable solo, no multiplayer required. Shares Action and Indie with Species: Unknown.
Venture forth as part of a specialized team of fellow players tasked with retrieving classified materials, evading the black goo virus, and the nightmarish entities it has spawned. With time running out before the US government initiates a devastating nuclear strike to contain the spreading menace.
- 3
Zombiefield
Single-player alternative to Species: Unknown — playable solo, no multiplayer required. Shares Action and Indie with Species: Unknown.
New Zombiefield contractors! Your mission is to open portals to attract tougher zombies and evacuate before the missile strike. Work together with your manager to reduce risks and get paid for completing your contract
- 4
InfestStation
Single-player alternative to Species: Unknown — playable solo, no multiplayer required. Shares Action and Indie with Species: Unknown.
INFESTSTATION is a multiplayer Sci-Fi horror game. Board danger-filled abandoned space craft, work together to complete objectives, and sever the dimensional gateways that have allowed horrifying threats to take over and infest these now derelict spaces.
- 5
Backrooms: The Others
Single-player alternative to Species: Unknown — playable solo, no multiplayer required. Shares Indie and Early Access with Species: Unknown.
Backrooms: The Others is a cooperative horror game for up to 4 players where you will be forced to explore these unknown nooks and crannies, trying to survive in this complex world where death can be waiting for you at every turn!
- 6
Backrooms: The Next Level
Single-player alternative to Species: Unknown — playable solo, no multiplayer required. Shares Indie and Early Access with Species: Unknown.
Backrooms: The Next Level is a Co-op horror game up to 4 players, where you and your friends will explore the game, try to pass the game level using your mind, wit, remembering the places where you were
- 7
BLINDSIGHT
Single-player alternative to Species: Unknown — playable solo, no multiplayer required. Shares Action and Indie with Species: Unknown.
Your voice lets you see. It also lets them find you. BLINDSIGHT is a co-op horror game for 1 to 4 players about hauling loot through the dark and knowing when to shut up. Bring friends. Preferably ones who can handle five seconds of silence.
- 8
Lethal Company
Single-player alternative to Species: Unknown — playable solo, no multiplayer required. Shares Action and Indie with Species: Unknown.
A co-op horror about scavenging at abandoned moons to sell scrap to the Company.
- 9
Phasmophobia
Single-player alternative to Species: Unknown — playable solo, no multiplayer required. Shares Action and Indie with Species: Unknown.
Phasmophobia is a 4 player online co-op psychological horror. Paranormal activity is on the rise and it’s up to you and your team to use all the ghost-hunting equipment at your disposal in order to gather as much evidence as you can.
- 10
Ready or Not
Single-player alternative to Species: Unknown — playable solo, no multiplayer required. Shares Action and Indie with Species: Unknown.
Ready or Not is an intense, tactical, first-person shooter that depicts a modern-day world in which SWAT police units are called to defuse hostile and confronting situations.
- 11
Alien: Isolation
Single-player alternative to Species: Unknown — playable solo, no multiplayer required. Shares Action with Species: Unknown.
Discover the true meaning of fear in Alien: Isolation, a survival horror set in an atmosphere of constant dread and mortal danger.
- 12
Ragnarock
Single-player alternative to Species: Unknown — playable solo, no multiplayer required. Shares Action and Indie with Species: Unknown.
Lead your viking ship to victory in this rhythm game! Pound your drums to the sound of epic music, from celtic rock to viking power metal, and set sail against your rivals. Solo, Split-Screen & Online PVP included.
- 13
Propagation: Paradise Hotel
Single-player alternative to Species: Unknown — playable solo, no multiplayer required. Shares Action with Species: Unknown.
Trapped inside the Paradise Hotel, you are desperate to find your sister. Explore dark surroundings, gather resources, and survive terrifying encounters. This intense single-player VR survival horror game with great storytelling will get your adrenaline pumping.
- 14
Propagation VR
Single-player alternative to Species: Unknown — playable solo, no multiplayer required. Shares Action with Species: Unknown.
Combining survival horror and static wave shooting, Propagation VR will get your adrenaline pumping as you try to survive a zombie apocalypse. Armed only with your guns and your fists, fight off terrifying zombies and other multi-species mutants. Will you get out alive?
- 15
Vestiges: Fallen Tribes
Single-player alternative to Species: Unknown — playable solo, no multiplayer required. Shares Indie with Species: Unknown.
Dive into a gripping strategy adventure set in a dystopian world. Lead your tribe to victory, deploy animated units, and conquer tactical challenges in this immersive (PC & PCVR) turn by turn board game.