Single-player games like Treehouse Riddle
Below are 13 single-player Steam games similar to Treehouse Riddle, 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 Treehouse Riddle page.
Ranked picks
- 1
Mr. Saitou
Single-player alternative to Treehouse Riddle — playable solo, no multiplayer required. Shares Adventure with Treehouse Riddle.
A short game about an average white-collar worker who struggles to find meaning in a life full of constant overtime and isolation. After an accident lands him in the hospital, Mr. Saitou is spirited away to a strange fantasy world where an unexpected friend takes him on a life-changing adventure.
- 2
Upwards, Rain! The Post Office of Farewells
Single-player alternative to Treehouse Riddle — playable solo, no multiplayer required. Shares Adventure and Casual with Treehouse Riddle.
Deciding to break protocol to lend a helping wing, Rain, a flighty little courier takes a skittish girl by the name of Mila on an adventure through the inner workings of a mysterious post office. Together, they search for a letter containing the last words of someone who seemingly never existed.
- 3
3 Minutes to Midnight® - A Comedy Graphic Adventure
Single-player alternative to Treehouse Riddle — playable solo, no multiplayer required. Shares Adventure and Casual with Treehouse Riddle.
In a race against time, Betty embarks on a thrilling, comedy-packed adventure to crack a conspiracy that starts with a bang and ends at 3 Minutes to Midnight.
- 4
Papetura
Single-player alternative to Treehouse Riddle — playable solo, no multiplayer required. Shares Adventure and Casual with Treehouse Riddle.
Papetura is a short atmospheric adventure game, with unique world handmade entirely out of paper, and beautiful fragile music. It tells the story of two little creatures whose house is in danger of being burned down.
- 5
Machinarium
Single-player alternative to Treehouse Riddle — playable solo, no multiplayer required. Shares Adventure with Treehouse Riddle.
Machinarium is the award-winning independent adventure game developed by the makers of Samorost series, Botanicula and CHUCHEL. Help Josef the robot save his girlfriend Berta kidnapped by the Black Cap Brotherhood gang!
- 6
LEGO® Builder's Journey
Single-player alternative to Treehouse Riddle — playable solo, no multiplayer required. Shares Adventure and Casual with Treehouse Riddle.
LEGO Builder’s Journey is an atmospheric, geometric puzzle game that asks us to sometimes follow the instructions… and sometimes to break the rules.
- 7
The Tiny Bang Story
Single-player alternative to Treehouse Riddle — playable solo, no multiplayer required. Shares Adventure and Casual with Treehouse Riddle.
Life on Tiny Planet was calm and carefree until a great disaster occurred - Tiny Planet was hit by a meteor! The world fell apart and now its future depends only on you! Use your imagination and creativity: in order to restore Tiny Planet and help its inhabitants you will have to fix a variety of machines and mechanisms as well as solve...
- 8
Return to Monkey Island
Single-player alternative to Treehouse Riddle — playable solo, no multiplayer required. Shares Adventure and Casual with Treehouse Riddle.
Return to Monkey Island is an unexpected, thrilling return of series creator Ron Gilbert that continues the story of the legendary adventure games.
- 9
Hokkaido Game
Single-player alternative to Treehouse Riddle — playable solo, no multiplayer required. Shares Casual with Treehouse Riddle.
This is a physics puzzle game in which you build Hokkaido by piling up prefectures of Japan. You become a "big person" and drop prefectures into a box. Connected same prefectures will evolve into a larger prefecture! Create the largest prefecture in Japan, Hokkaido, before the box overflows!
- 10
Recolit
Single-player alternative to Treehouse Riddle — playable solo, no multiplayer required. Shares Adventure and Casual with Treehouse Riddle.
Your spaceship crashes, and you find yourself in a dark town that looks just like any other, but that has something different about it. Its people go about their daily lives as if nothing was off, even though the sky above their heads is always black.
- 11
EQUALINE
Single-player alternative to Treehouse Riddle — playable solo, no multiplayer required.
EQUALINE is a "one-stroke calculation puzzle" where you have to connect numbers and symbols with lines to complete a calculation. There is only one correct answer for each combination of nine squares, and the target number increases with each puzzle. It's a highly competitive action puzzle game.
- 12
Invercity
Single-player alternative to Treehouse Riddle — playable solo, no multiplayer required.
Invercity is a puzzle-platformer that features the action "Handstand". A handstand looks like hanging when you look it upside down, doesn't it? This game really makes it look that way. A reporter who loves doing handstands follows a mystery while reporting the "Invercity Phenomenon” in the city.
- 13
Muscle Ninja VR
Single-player alternative to Treehouse Riddle — playable solo, no multiplayer required. Shares Casual with Treehouse Riddle.
This is a Muscle Obstacle Cource VR game with grip controls. Become a challenger of the muscle athletic show "Muscle Ninja" and conquer the steel demon castle! Your play can be streamed to an external monitor from a third-person perspective. Use your VRM model as your avatar and stream it!