Single-player games like Slender Island
Below are 8 single-player Steam games similar to Slender Island, 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 Slender Island page.
Ranked picks
- 1

LEENIE'S TALE
Single-player alternative to Slender Island — playable solo, no multiplayer required. Shares Action and Indie with Slender Island.
In this sequel to Leenie Boog, you are an Artaktikon named Ballin. Plucking up your courage, you decided to start fresh: move to the big city and get a job. You truly believed that the dark ages, when carnivores devoured herbivores, were long gone... Or so you thought, until recently.
- 2

Infectum
Single-player alternative to Slender Island — playable solo, no multiplayer required. Shares Action and Indie with Slender Island.
Infectum is a first-person horror shooter set in the secret complexes of an underground laboratory. Shoot, hack, gather clues. Keep an eye on your sanity level — madness will destroy you faster than the mutants. Go insane or die trying to escape.
- 3

CALL OF CUTIE
Single-player alternative to Slender Island — playable solo, no multiplayer required. Shares Action and Indie with Slender Island.
CALL OF CUTIE is a single-player horror adventure set inside a vast, terrifying laboratory. Explore dark corridors, solve puzzles, fight frightening enemies, and rescue the victims trapped inside. Choose your own path with Bubbles and find a way to escape.
- 4

Clinical Memory
Single-player alternative to Slender Island — playable solo, no multiplayer required. Shares Indie with Slender Island.
This is not just a walking simulator. This is a new genre: a memory simulator. Explore Ward 7B, survive distorted cycles, collect fragments of memory, and face a truth that changes everything at the end.
- 5

COMING HOME
Single-player alternative to Slender Island — playable solo, no multiplayer required. Shares Action and Indie with Slender Island.
A retro slasher horror game, with a focus on home defense. In the dead of night, you hear someone lurking outside - but you are not defenseless. Watch the cameras, barricade your doors, and have your gun at the ready - anything to keep the Sundown Rippers from claiming their next victim.
- 6

Barking from the Dark
Single-player alternative to Slender Island — playable solo, no multiplayer required. Shares Indie and Adventure with Slender Island.
You’re on duty at crossing #13. Keep an eye on the tracks, repair the sleepers, open the barriers for trains, cars, and people. Something in the woods is barking… and it’s calling you.
- 7

Penumbra: Black Plague Gold Edition
Single-player alternative to Slender Island — playable solo, no multiplayer required. Shares Action and Indie with Slender Island.
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.
- 8

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