Single-player games like 99% - 残された被検体 -
Below are 9 single-player Steam games similar to 99% - 残された被検体 -, 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 99% - 残された被検体 - page.
Ranked picks
- 1
System Malfunction
Single-player alternative to 99% - 残された被検体 - — playable solo, no multiplayer required. Shares Indie and Simulation with 99% - 残された被検体 -.
"System Malfunction" is a first-person horror game set in a mysterious building. The player takes on the role of a security guard who witnesses strange occurrences during the night shift. In a fear-inducing environment, the player explores the building to uncover hidden truths.
- 2
It follows you
Single-player alternative to 99% - 残された被検体 - — playable solo, no multiplayer required. Shares Action and Indie with 99% - 残された被検体 -.
You are all alone in this dark and frightening place. Run and hide, hurry to find a way out, because it follows you...
- 3
The Observation Exit
Single-player alternative to 99% - 残された被検体 - — playable solo, no multiplayer required. Shares Indie and Simulation with 99% - 残された被検体 -.
A first-person psychological horror where you must identify anomalies, choose the correct elevator to progress, and escape an endless loop in a hospital corridor while avoiding deadly entities.
- 4
Whisper Forest
Single-player alternative to 99% - 残された被検体 - — playable solo, no multiplayer required. Shares Indie and Simulation with 99% - 残された被検体 -.
Whisper Forest is a Japanese-style horror game where "Nesting creatures." lurks. Players collect Amulets and offer them to lanterns.
- 5
EXPEDITION TO THE BACKROOMS
Single-player alternative to 99% - 残された被検体 - — playable solo, no multiplayer required. Shares Action and Indie with 99% - 残された被検体 -.
You are the exploration team from company Async, you arrive to reported anomaly place and searching for anomalies, but what would you find? Prepare yourself for a gripping and heart-pounding adventure in EXPEDITION TO THE BACKROOMS, where every step could be your last.
- 6
Life after Death
Single-player alternative to 99% - 残された被検体 - — playable solo, no multiplayer required. Shares Action and Indie with 99% - 残された被検体 -.
Do you remember the scares that chased you in childhood? How did your limbs shake with fear, take your breath away, and you couldn't do anything about it? I invite you to live it all over again!
- 7
CRUELTY
Single-player alternative to 99% - 残された被検体 - — playable solo, no multiplayer required. Shares Action and Indie with 99% - 残された被検体 -.
"CRUELTY" is a Japanese-made splatter horror. You were in an accident and lost consciousness. The moment you wake up, you find yourself in a nightmare world, one that is not of this Earth. In an abattoir ruled by madness, horrific scenes unfold, and inescapable terror awaits you.
- 8
The Cabin Factory
Single-player alternative to 99% - 残された被検体 - — playable solo, no multiplayer required. Shares Indie and Simulation with 99% - 残された被検体 -.
Your job at the Cabin Factory is simple: inspect the cabins and decide on whether they’re haunted or not. If you do find any anomalies, get out…immediately.
- 9
The Grim Gamble / グリムギャンブル
Single-player alternative to 99% - 残された被検体 - — playable solo, no multiplayer required. Shares Indie with 99% - 残された被検体 -.
"The Grim Gamble is a first-person multiplayer game where players take part in a bizarre death game, playing a board game for their survival."