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

Lucid Dream Adventure
Single-player alternative to Castle of Secrets — playable solo, no multiplayer required. Shares Indie and Adventure with Castle of Secrets.
Lucid Dream is the story of little Lucy, who goes on an adventure into the world of dreams with the mission to save her mother.
- 2

Vasilis
Single-player alternative to Castle of Secrets — playable solo, no multiplayer required. Shares Indie and Adventure with Castle of Secrets.
Vasilis is a hand-drawn adventure game. The main character – Vasilis, lost her husband – Peter, in the rebellious city center. The city is in riots for a long time and almost everyday something burns or someone dies.
- 3

Unsound Love
Single-player alternative to Castle of Secrets — playable solo, no multiplayer required. Shares Indie and Adventure with Castle of Secrets.
An open-world horror escape room where nothing is explained. You are born into a new world through the backseat of a wrecked car. Trapped in a time loop. Understand it — or stay trapped forever.
- 4

My Beautiful Paper Smile
Single-player alternative to Castle of Secrets — playable solo, no multiplayer required. Shares Indie and Adventure with Castle of Secrets.
Welcome, child, to your new home. Here you shall learn the art of perfection. Here you shall learn to smile. Be sure that smile doesn’t fade into sadness, or you will need to run and hide…
- 5

Rusty Lake Hotel
Single-player alternative to Castle of Secrets — playable solo, no multiplayer required. Shares Indie and Adventure with Castle of Secrets.
Are you ready to serve the guests in the Rusty Lake Hotel? Solve all mysteries in this dark and eerie puzzle game. Rusty Lake Hotel is a point-and-click adventure by the creators of the Rusty Lake & Cube Escape series.
- 6

Fran Bow
Single-player alternative to Castle of Secrets — playable solo, no multiplayer required. Shares Indie and Adventure with Castle of Secrets.
Fran Bow is a creepy adventure game that tells the story of Fran, a young girl struggling with a mental disorder and an unfair destiny.
- 7

Tales from Candleforth
Single-player alternative to Castle of Secrets — playable solo, no multiplayer required. Shares Indie and Adventure with Castle of Secrets.
Tales from Candleforth is a folk horror 2D point and click game with puzzles and escape room mechanics, that narrates the fairy tales from the village. The text contained in this ancient and evil book is now bleeding out, mixing the world of nightmares with the real one through handmade 2D graphics.
- 8

Dad's Monster House
Single-player alternative to Castle of Secrets — playable solo, no multiplayer required. Shares Indie and Adventure with Castle of Secrets.
Dad's Monster House is a hand-drawn puzzle game featuring horror and fantasy. It tells the story of Carlos' journey after he receives a distress call from his father, pleading for him to return to his old home and rescue his dad.
- 9

Malice in Wonderland
Single-player alternative to Castle of Secrets — playable solo, no multiplayer required. Shares Indie with Castle of Secrets.
Tear through Wonderland and break free of The Hatter's control in this fast-paced action roguelike. Augment your abilities to destroy your foes and escape before you're out of time!