Single-player games like Acanthoceras
Below are 10 single-player Steam games similar to Acanthoceras, 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 Acanthoceras page.
Ranked picks
- 1

The Jurassic Labyrinth
Single-player alternative to Acanthoceras — playable solo, no multiplayer required. Shares Indie and Adventure with Acanthoceras.
A psychological horror puzzle game set in a living labyrinth that adapts to your choices. Solve shifting mechanisms, navigate ever-changing corridors, and evade a relentless presence that learns your behavior as you try to escape.
- 2

Despondent
Single-player alternative to Acanthoceras — playable solo, no multiplayer required. Shares Indie and Adventure with Acanthoceras.
Despondent is a first-person survival horror title. Play as Sedgewick, a young man tossed into a hellish fight for his life while trying to pick up the pieces of his past. Manage a debilitating sickness, hold on to what little hope is left, uncover a rancid plot and just maybe... make it out alive.
- 3

Betrayer
Single-player alternative to Acanthoceras — playable solo, no multiplayer required. Shares Indie and Adventure with Acanthoceras.
Betrayer is a first person action adventure game that takes you to the New World at the turn of the 17th century.The year is 1604. You sailed from England expecting to join a struggling colony on the coast of Virginia. Instead, you find only ghosts and mysteries. What catastrophe blighted the land and drained it of color and life?
- 4

Hatch
Single-player alternative to Acanthoceras — playable solo, no multiplayer required. Shares Indie and Adventure with Acanthoceras.
"Hatch is a single-player, first-person horror game. You find a hatch in your room and strange things start to happen to you. You are the target of psycho killers. You have to find the truth behind the hatch and escape from the crazy world.
- 5

?? Movie Theater
Single-player alternative to Acanthoceras — playable solo, no multiplayer required. Shares Indie and Adventure with Acanthoceras.
This is a funny movie theater where you can watch any kind of movie. I saw a movie here. It is a story of a high school boy “Sota Sakurai” until ※※※※※※.
- 6

Never Again
Single-player alternative to Acanthoceras — playable solo, no multiplayer required. Shares Indie and Adventure with Acanthoceras.
Never Again - Horror/first-person Quest. The main essence of the game is research locations and puzzles, plunging in the dramatic story of a little girl suffering from asthma.
- 7

Evil Nun: The Broken Mask
Single-player alternative to Acanthoceras — playable solo, no multiplayer required. Shares Indie and Adventure with Acanthoceras.
Enter Evil Nun's nightmare. Trapped in a cursed school, escape from Sister Madeline. She's cunning, searching every corner, luring and talking to you depending on your actions. Solve puzzles, craft items, and uncover the mystery in this horror game with different escape routes.
- 8

ROUTINE
Single-player alternative to Acanthoceras — playable solo, no multiplayer required. Shares Indie and Adventure with Acanthoceras.
ROUTINE is a First Person Sci-Fi Horror set on an abandoned lunar base designed around an 80s vision of the future. Explore and investigate your surroundings as you survive against unknown threats.
- 9

Brain Marmelade
Single-player alternative to Acanthoceras — playable solo, no multiplayer required. Shares Indie and Adventure with Acanthoceras.
Brain Marmelade is a 2D platformer/ adventure game with an hand-draw creepy art style and a unique combat system. This game follows the "Dumped One" in his dangerous quest to find the GLORIOUS Brain Marmelade.
- 10

Arabel
Single-player alternative to Acanthoceras — playable solo, no multiplayer required. Shares Indie and Adventure with Acanthoceras.
3D adventure game telling the story of a lost knight, searching her way out of the strange and twisted lands of the Abyss. Safe journey to you !