Single-player games like Penumbra: Requiem
Below are 16 single-player Steam games similar to Penumbra: Requiem, 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 Penumbra: Requiem page.
Ranked picks
- 1

Penumbra: Black Plague Gold Edition
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required. Shares Indie and Adventure with Penumbra: Requiem.
Surrounded by enemies and assaulted by terror from all sides, Philip must collect clues and solve vexing puzzles while combating the gnawing psychological terrors that assail his mind and threaten to strip him of his sanity.
- 2

Penumbra Overture
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required. Shares Indie and Adventure with Penumbra: Requiem.
Penumbra: Overture is a first person survival horror game, emphasizing on survival and problem solving instead of mindless violence and gore.
- 3

Amnesia: The Dark Descent
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required. Shares Indie and Adventure with Penumbra: Requiem.
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.
- 4

Don't Fret
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required. Shares Indie and Adventure with Penumbra: Requiem.
A sentient guitar trapped inside a nightmare music school. Hide, distract, and survive horrifying creatures as you tune your way through musical puzzles and fractured memories to uncover the truth.
- 5

Amnesia: A Machine for Pigs
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required. Shares Indie and Adventure with Penumbra: Requiem.
From the creators of Amnesia: The Dark Descent and Dear Esther comes a new first-person horrorgame that will drag you to the depths of greed, power and madness. It will bury its snout into your ribs and it will eat your heart.
- 6

Nightmare Within
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required. Shares Indie and Adventure with Penumbra: Requiem.
Nightmare Within - Immerse yourself in the dark and unsettling atmosphere of psychological horror. Explore shifting locations, uncover fragments of memories, and reveal a story where reality fractures under the weight of guilt.
- 7

Amnesia: Rebirth
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required. Shares Indie and Adventure with Penumbra: Requiem.
A first-person horror adventure. Uncover your past and survive the Algerian desert. Fear is your enemy; stay calm to not succumb to an illness threatening you and your loved one. Avoid darkness, hide from monsters and solve puzzles. Adventure Mode available for a less scary experience.
- 8

Outlast
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required. Shares Indie and Adventure with Penumbra: Requiem.
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

Portal
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required.
Portal™ is a new single player game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative new games on the horizon and will offer gamers hours of unique gameplay.
- 10

Portal 2
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required. Shares Adventure with Penumbra: Requiem.
The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
- 11

The Stanley Parable
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required. Shares Indie and Adventure with Penumbra: Requiem.
The Stanley Parable is a first person exploration game. You will play as Stanley, and you will not play as Stanley. You will follow a story, you will not follow a story. You will have a choice, you will have no choice. The game will end, the game will never end.
- 12

The Talos Principle
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required. Shares Indie and Adventure with Penumbra: Requiem.
The Talos Principle is a first-person puzzle game in the tradition of philosophical science fiction. Made by Croteam and written by Tom Jubert (FTL, The Swapper) and Jonas Kyratzes (The Sea Will Claim Everything).
- 13

SOMA
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required. Shares Indie and Adventure with Penumbra: Requiem.
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.
- 14

Half-Life 2
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required.
Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat.
- 15

Amnesia: The Bunker
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required. Shares Indie and Adventure with Penumbra: Requiem.
Amnesia: The Bunker is a first-person horror game set in a WW1 bunker. A relentless, AI-driven monster stalks you. Survival depends on finding tools, crafting items, and keeping the lights on.
- 16

ONTOS
Single-player alternative to Penumbra: Requiem — playable solo, no multiplayer required. Shares Indie and Adventure with Penumbra: Requiem.
A sci-fi mystery set on the repurposed moon hotel Samsara. Uncover cryptic experiments, face unsettling encounters, and piece together a mind-bending narrative. The deeper you go, the more the truth unravels as you confront the ultimate question: What is reality?