Single-player games like Letter Lost
Below are 8 single-player Steam games similar to Letter Lost, 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 Letter Lost page.
Ranked picks
- 1
The Room Three
Single-player alternative to Letter Lost — playable solo, no multiplayer required. Shares Indie and Adventure with Letter Lost.
Lured to a remote island, you find yourself confined within the rooms of an ominous mansion. You must draw upon all your puzzle-solving ability to navigate a series of trials devised by a mysterious figure known only as “The Craftsman”. Do you have what it takes to escape?
- 2
Rusty Lake: Roots
Single-player alternative to Letter Lost — playable solo, no multiplayer required. Shares Indie and Adventure with Letter Lost.
Experience the beginning and end of characters' lives and build your own family tree! Rusty Lake: Roots is the second premium point-and-click adventure by the creators of the Cube Escape series and Rusty Lake Hotel.
- 3
The Casting of Frank Stone™
Single-player alternative to Letter Lost — playable solo, no multiplayer required. Shares Adventure with Letter Lost.
The shadow of Frank Stone looms over Cedar Hills, a town forever altered by his violent past. As a group of young friends are about to discover, Stone’s blood-soaked legacy cuts deep, leaving scars across families, generations, and the very fabric of reality itself.
- 4
CLeM
Single-player alternative to Letter Lost — playable solo, no multiplayer required. Shares Indie and Adventure with Letter Lost.
CLeM is a narrative-driven puzzle adventure game with a dark twist. Wake up in a world where puzzles intertwine with exploration, weaving a unique narrative rooted in alchemy. A voice awakens you. It gives you purpose. To guide you, you find a notebook with mysterious entries and a house to explore.
- 5
The Room
Single-player alternative to Letter Lost — playable solo, no multiplayer required. Shares Indie and Adventure with Letter Lost.
A mysterious invitation leads to the attic of an abandoned house. In the room is a cast-iron safe laced with strange carvings and on top, a note from your distant companion. It promises something ancient and astonishing concealed in the iron chamber - you need only find a way in.
- 6
The Infectious Madness of Doctor Dekker
Single-player alternative to Letter Lost — playable solo, no multiplayer required. Shares Indie and Adventure with Letter Lost.
YOU are a psychiatrist, trying to solve a murder whilst treating the unusual patients of the recently deceased Doctor Dekker. Type a question - patients reply in full screen video and have questions for you too but be careful what you say. Your words determine their eventual fates, and your own!
- 7
Cthulhu: The Cosmic Abyss
Single-player alternative to Letter Lost — playable solo, no multiplayer required. Shares Adventure with Letter Lost.
A mining station in the Pacific abyss is no longer responding. As an investigator of the occult, unravel the mysteries of the deep. Test your wits and sanity in this lovecraftian thriller.
- 8
Transient: Extended Edition
Single-player alternative to Letter Lost — playable solo, no multiplayer required. Shares Indie and Adventure with Letter Lost.
H.P. Lovecraft meets Cyberpunk. Delve deep into a dystopian world and investigate what is happening to you and your friends in a domed city. Solve puzzles, hack systems and plug in to explore other dimensions. Discover a truth that might tear apart your sanity and question your very existence.