Single-player games like SEPTEMBER 1999
Below are 9 single-player Steam games similar to SEPTEMBER 1999, 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 SEPTEMBER 1999 page.
Ranked picks
- 1
Psalm 5:9-13
Single-player alternative to SEPTEMBER 1999 — playable solo, no multiplayer required. Shares Indie with SEPTEMBER 1999.
"Psalm 5:9-13" is a first-person psychological horror game with VHS effect. Be careful and attentive, there is something hiding in these rooms, something is watching from the darkness.
- 2
Visage
Single-player alternative to SEPTEMBER 1999 — playable solo, no multiplayer required. Shares Indie with SEPTEMBER 1999.
Visage is a first-person psychological horror game. Explore a mysterious ever-changing house in a slow-paced, atmospheric world that combines both uncannily comforting and horrifyingly realistic environments, and enjoy a genuinely terrifying experience.
- 3
Among the Sleep - Enhanced Edition
Single-player alternative to SEPTEMBER 1999 — playable solo, no multiplayer required. Shares Indie with SEPTEMBER 1999.
Among the Sleep: Enhanced Edition is a new and improved version of the award winning first person horror adventure. In the game you play as a small child trapped in a weird nightmare where you go looking for your mom.
- 4
SOMA
Single-player alternative to SEPTEMBER 1999 — playable solo, no multiplayer required. Shares Indie with SEPTEMBER 1999.
From the creators of Amnesia: The Dark Descent comes SOMA, a sci-fi horror game set below the waves of the Atlantic ocean. Struggle to survive a hostile world that will make you question your very existence.
- 5
Still Wakes the Deep
Single-player alternative to SEPTEMBER 1999 — playable solo, no multiplayer required. Shares Indie with SEPTEMBER 1999.
1975. Disaster strikes the Beira D oil rig off the coast of Scotland. Navigate the collapsing rig to save your crew from an otherworldly horror on the edge of all logic and reality in this 3x BAFTA Games Award-winning narrative horror experience.
- 6
Amnesia: The Dark Descent
Single-player alternative to SEPTEMBER 1999 — playable solo, no multiplayer required. Shares Indie with SEPTEMBER 1999.
Amnesia: The Dark Descent, a first person survival horror. A game about immersion, discovery and living through a nightmare. An experience that will chill you to the core.
- 7
Neverending Nightmares
Single-player alternative to SEPTEMBER 1999 — playable solo, no multiplayer required. Shares Indie with SEPTEMBER 1999.
Experience true psychological horror as you explore nightmares inspired by the creator's struggles with depression and OCD. The defenseless protagonist must avoid monstrous manifestations of what haunts his subconscious in his quest to wake up into reality.
- 8
Outlast
Single-player alternative to SEPTEMBER 1999 — playable solo, no multiplayer required. Shares Indie with SEPTEMBER 1999.
Hell is an experiment you can't survive in Outlast, a first-person survival horror game developed by veterans of some of the biggest game franchises in history. As investigative journalist Miles Upshur, explore Mount Massive Asylum and try to survive long enough to discover its terrible secret... if you dare.
- 9
OK/NORMAL
Single-player alternative to SEPTEMBER 1999 — playable solo, no multiplayer required. Shares Indie with SEPTEMBER 1999.
OK/NORMAL is a short, experimental third-person horror experience, inspired by early 3D console games of the 90's. Journey through a dark, disjointed, dreamlike dimension with your cloud companion! Remember a good diet, take your medicine, and you should be fine!