Single-player games like NULL
Below are 9 single-player Steam games similar to NULL, 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 NULL page.
Ranked picks
- 1

Not My Son
Single-player alternative to NULL — playable solo, no multiplayer required. Shares Indie and Adventure with NULL.
A psychological horror game where a stepfather is left alone with a disturbing child. Explore a quiet house, face growing nightmares, and piece together the truth behind the boy’s behavior.
- 2

What Happened to Lily?
Single-player alternative to NULL — playable solo, no multiplayer required. Shares Indie and Adventure with NULL.
What Happened to Lily? Is a real-time first-person horror game. Discover the secrets and spooky truths behind the mysterious event at Miller Farm.
- 3

Insanias
Single-player alternative to NULL — playable solo, no multiplayer required. Shares Indie and Adventure with NULL.
Insanias is a psychological horror game where you will have to explore what happened to find a hidden truth. To do this, you will have to be able to control your sanity to avoid falling into the madness that lurks in every corner. Are you ready to face your fears and discover the truth?
- 4

Oxenfree
Single-player alternative to NULL — playable solo, no multiplayer required. Shares Indie and Adventure with NULL.
Oxenfree is a supernatural thriller about a group of friends who unwittingly open a ghostly rift. You are Alex, and you’ve just brought your new stepbrother Jonas to an overnight island party gone horribly wrong.
- 5

Anamorphine
Single-player alternative to NULL — playable solo, no multiplayer required. Shares Indie and Adventure with NULL.
Explore the past as you resolve the present in Anamorphine, a surreal adventure of rendered emotions. Journey into the mind of the main character, a young man in denial. His subconscious is pushing him to face his past - or be consumed by it.
- 6

The Signifier Director's Cut
Single-player alternative to NULL — playable solo, no multiplayer required. Shares Indie and Adventure with NULL.
This story-driven adventure follows a mystery of death and despair from reality into the surreal realms of objective memories and subjective experiences. Search the mind, solve puzzles, and unravel the dark truth in this psychological thriller.
- 7

Revenge Of The Colon
Single-player alternative to NULL — playable solo, no multiplayer required. Shares Indie with NULL.
Revenge of the colon is a story driven, single-player, atmospheric, body horror game with multiple endings. Perform colonoscopies on five patients and discover the horrors concealed deep within them. PS1 horror style!
- 8

The Bridge Curse 2: The Extrication
Single-player alternative to NULL — playable solo, no multiplayer required. Shares Adventure with NULL.
Try to escape with your life in a first-person survival horror adventure. Play through the eyes of four distinct characters as you evade and confront terrifying ghosts, unravel mind-bending puzzles, and unearth a sinister conspiracy…
- 9

UNEXTINCTION
Single-player alternative to NULL — playable solo, no multiplayer required. Shares Indie and Adventure with NULL.
Stranded at sea and trapped on a dinosaur-infested island, uncover hidden secrets in a lost sci-fi bio lab while fighting to survive, escape, and outlast nature’s deadliest era.