Single-player games like DEAD LETTER DEPT.
Below are 13 single-player Steam games similar to DEAD LETTER DEPT., 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 DEAD LETTER DEPT. page.
Ranked picks
- 1

Human.exe
Single-player alternative to DEAD LETTER DEPT. — playable solo, no multiplayer required. Shares Indie with DEAD LETTER DEPT..
An AI has isolated the mind of a philosophy professor to evaluate human morality. As the terminal operator, you access files, run programs, and take his consciousness through ethical dilemmas. Your decisions will train the AI's final algorithm.
- 2

Whale Flesh
Single-player alternative to DEAD LETTER DEPT. — playable solo, no multiplayer required. Shares Indie with DEAD LETTER DEPT..
A short horror game where you dig through the flesh of a giant whale
- 3

Glimpse
Single-player alternative to DEAD LETTER DEPT. — playable solo, no multiplayer required. Shares Indie with DEAD LETTER DEPT..
"Glimpse" is a single-player atmospheric horror game. Get a glimpse of the struggles and fears of a person affected by Alzheimer's Disease.
- 4

The Mournmore Killings
Single-player alternative to DEAD LETTER DEPT. — playable solo, no multiplayer required. Shares Indie with DEAD LETTER DEPT..
The Mournmore Killings a story-driven, deduction based mystery game where you step into the shoes of a detective trying to solve the enigmatic riddles left behind by a serial killer.
- 5

Kitchen Gore
Single-player alternative to DEAD LETTER DEPT. — playable solo, no multiplayer required. Shares Indie with DEAD LETTER DEPT..
You feed it. Locked away in the basement. Every day, her voice sounds more like it used to.
- 6

Mayfly
Single-player alternative to DEAD LETTER DEPT. — playable solo, no multiplayer required. Shares Indie with DEAD LETTER DEPT..
Mayfly is an eerie story-based quiet horror set aboard a narrowboat in Northern England. Upon waking alone to find your husband is missing you find yourself weaving through a shifting, unstable reality as you search your confined surroundings in this short narrative exploration game.
- 7

Room 337
Single-player alternative to DEAD LETTER DEPT. — playable solo, no multiplayer required. Shares Indie with DEAD LETTER DEPT..
You are a father. You wake in a hallway that hums. Empty pools. Dead malls. Your four daughters are here. Voice acted by a real father and his daughters. Two endings. No right answer.
- 8

Her Love, Like Poison
Single-player alternative to DEAD LETTER DEPT. — playable solo, no multiplayer required. Shares Indie with DEAD LETTER DEPT..
A dark lesbian horror/romance story so toxic it's emitting spores. Ethel, a shy university student, ventures into the wintry woods late at night, where she meets an enchanting femme fatale — but all is not as it seems.
- 9

Papers, Please
Single-player alternative to DEAD LETTER DEPT. — playable solo, no multiplayer required. Shares Indie with DEAD LETTER DEPT..
Congratulations. The October labor lottery is complete. Your name was pulled. For immediate placement, report to the Ministry of Admission at Grestin Border Checkpoint. An apartment will be provided for you and your family in East Grestin. Expect a Class-8 dwelling.
- 10

The Typing of The Dead: Overkill
Single-player alternative to DEAD LETTER DEPT. — playable solo, no multiplayer required.
Typing of the dead: Overkill fuses the horror and comedy of the legendary House of the Dead series with unique typing mechanics in order to deliver a truly original gaming experience! This gruesome shooter puts you in the middle of a mutant outbreak in Bayou county.
- 11

Resident Evil
Single-player alternative to DEAD LETTER DEPT. — playable solo, no multiplayer required.
The game that defined the survival-horror genre is back! Check out the remastered HD version of Resident Evil.
- 12

Phasmophobia
Single-player alternative to DEAD LETTER DEPT. — playable solo, no multiplayer required. Shares Indie with DEAD LETTER DEPT..
Phasmophobia is a 4 player online co-op psychological horror. Paranormal activity is on the rise and it’s up to you and your team to use all the ghost-hunting equipment at your disposal in order to gather as much evidence as you can.
- 13

SILENT HILL 2
Single-player alternative to DEAD LETTER DEPT. — playable solo, no multiplayer required.
Investigating a letter from his late wife, James returns to where they made so many memories - Silent Hill. What he finds is a ghost town, prowled by disturbing monsters and cloaked in deep fog. Confront the monsters, solve puzzles, and search for traces of your wife in this remake of SILENT HILL 2.