Single-player games like Mr. Rainer's Solve-It Service
Below are 11 single-player Steam games similar to Mr. Rainer's Solve-It Service, 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 Mr. Rainer's Solve-It Service page.
Ranked picks
- 1

tomorrow won't come for those without ██████
Single-player alternative to Mr. Rainer's Solve-It Service — playable solo, no multiplayer required. Shares Indie and Adventure with Mr. Rainer's Solve-It Service.
That day, we told a lie.
- 2

The Void
Single-player alternative to Mr. Rainer's Solve-It Service — playable solo, no multiplayer required. Shares Adventure with Mr. Rainer's Solve-It Service.
Only brought to life by scarce sparks of Color, the bleak, grey Void is a peculiar place. The player gets to explore it, get to know the Sisters, Brothers, and other weird creatures inhabiting it, and learn the ways of Color, harvesting it and drawing sigils that change the world around them.
- 3

BLACKSHARD
Single-player alternative to Mr. Rainer's Solve-It Service — playable solo, no multiplayer required. Shares Indie and Adventure with Mr. Rainer's Solve-It Service.
BLACKSHARD is a first-person exploration game. Wander through a strange megastructure, the Labyrinth, to unravel its mysteries... Your behavior within the Labyrinth will define the outcome of your journey. What path will you choose to take?
- 4

The Old City: Leviathan
Single-player alternative to Mr. Rainer's Solve-It Service — playable solo, no multiplayer required. Shares Indie and Adventure with Mr. Rainer's Solve-It Service.
The Old City: Leviathan is an experiment in first person exploration that focuses entirely on story. All that exists is you and the world. Set in a decaying city from a civilization long past, The Old City: Leviathan puts the player in the shoes of a sewer dwelling isolationist.
- 5

The Franz Kafka Videogame
Single-player alternative to Mr. Rainer's Solve-It Service — playable solo, no multiplayer required. Shares Indie and Adventure with Mr. Rainer's Solve-It Service.
An original puzzle/adventure game inspired by the writings of Franz Kafka.
- 6

Éalú
Single-player alternative to Mr. Rainer's Solve-It Service — playable solo, no multiplayer required. Shares Indie and Adventure with Mr. Rainer's Solve-It Service.
A cozy, handmade stop-motion adventure... unless the maze takes a darker turn... Guide your wooden mouse through a labyrinth full of puzzles & unknown dangers in search of an exit to a happier place.
- 7

Four Last Things
Single-player alternative to Mr. Rainer's Solve-It Service — playable solo, no multiplayer required. Shares Indie and Adventure with Mr. Rainer's Solve-It Service.
Four Last Things is a very silly pythonesque adventure made from Renaissance-era paintings and public domain recordings of classical music. It is about sin, and the Four Last Things – Death, Judgement, Heaven and Hell – and strives to be intelligent and ridiculous in equal measures.
- 8

Transient: Extended Edition
Single-player alternative to Mr. Rainer's Solve-It Service — playable solo, no multiplayer required. Shares Indie and Adventure with Mr. Rainer's Solve-It Service.
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.
- 9

Hello Charlotte EP3: Childhood's End
Single-player alternative to Mr. Rainer's Solve-It Service — playable solo, no multiplayer required. Shares Indie with Mr. Rainer's Solve-It Service.
"All ended well.There was nothing to grieve about." A farewell, and a greeting.
- 10

Hello Charlotte EP2: Requiem Aeternam Deo
Single-player alternative to Mr. Rainer's Solve-It Service — playable solo, no multiplayer required. Shares Indie and Adventure with Mr. Rainer's Solve-It Service.
A eulogy for happiness, and a lament for connection that never was.
- 11

Rehab Friday
Single-player alternative to Mr. Rainer's Solve-It Service — playable solo, no multiplayer required. Shares Adventure with Mr. Rainer's Solve-It Service.
Happiness is a choice.