Single-player games like Grandpa Nightmare
Below are 8 single-player Steam games similar to Grandpa Nightmare, 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 Grandpa Nightmare page.
Ranked picks
- 1
Dark Return
Single-player alternative to Grandpa Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Grandpa Nightmare.
Immerse yourself in a dark journey filled with secrets and horror, as John returns home after receiving a mysterious letter from a family member stating that he must return home after traveling for treatment. Discover terrifying facts and uncover buried secrets in an exciting and fun experience
- 2
Haunt Chaser
Single-player alternative to Grandpa Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Grandpa Nightmare.
Haunt Chaser is a 4 Player Co-Op horror game, can be played as a Single-Player too. Chasers need to use all the hunting equipment in order to banish the evil and save the poor souls from torment while uncovering deeply disturbing secrets. Also, there is a 4v1 party game mode.
- 3
Evil Nun: The Broken Mask
Single-player alternative to Grandpa Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Grandpa Nightmare.
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.
- 4
Mister Furry: Hot Muscles
Single-player alternative to Grandpa Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Grandpa Nightmare.
♂ Unique Furry Horror with Muscular Mister Furries, Deep Plot, Great Sound Effects and Creepy Atmosphere of Furry Dungeon. Hot Milk, Dungeon Items, Gym, Gay-Bar, Pool, Locker Room, Atmospheric Music and much more! Will you be able to escape punishment from Mister Furry? ♂
- 5
Five Nights at Freddy's: Security Breach
Single-player alternative to Grandpa Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Grandpa Nightmare.
In Five Nights at Freddy’s: Security Breach, play as Gregory, a young boy who’s been trapped overnight inside of Freddy Fazbear’s Mega Pizzaplex. With the help of Freddy himself, Gregory must uncover the secrets of the Pizzaplex, learn the truth, and survive until dawn.
- 6
Outlast
Single-player alternative to Grandpa Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Grandpa Nightmare.
Hell is an experiment you can't survive in Outlast, a first-person survival horror game developed by veterans of some of the biggest game franchises in history. As investigative journalist Miles Upshur, explore Mount Massive Asylum and try to survive long enough to discover its terrible secret... if you dare.
- 7
The Beast Inside
Single-player alternative to Grandpa Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Grandpa Nightmare.
The Beast Inside is a unique, gripping twist on thriller and survival horror. Immerse in the story of long-buried secrets, personal tragedies, and madness. Play as two protagonists bounded by dark heritage. Combat the enemies, solve riddles and experience real terror in the 3D-scanned environment.
- 8
Penumbra: Black Plague Gold Edition
Single-player alternative to Grandpa Nightmare — playable solo, no multiplayer required. Shares Action and Indie with Grandpa Nightmare.
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.