Single-player games like iO
Below are 13 single-player Steam games similar to iO, 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 iO page.
Ranked picks
- 1
Let's See What You Got
Single-player alternative to iO — playable solo, no multiplayer required. Shares Action and Indie with iO.
There's always room for improvement. Push your human tolerance to the limit with unique and challenging physic-sandbox platforming. Run on the walls. Jump off the ceilings. Swing through a dark lab. Die, a lot. The trials before you won't be easy. So, let's see what you got.
- 2
Great Marble Adventure
Single-player alternative to iO — playable solo, no multiplayer required. Shares Action and Indie with iO.
Guide the marble in the journey through more than 50 thematic stages across three difficulties: Easy, Normal, and Hard, with various challenges in Great Marble Adventure, an unforgettable 3D ball-rolling game! Are you ready for the unforgettable marble adventure?
- 3
Marble Abduction! Patti Hattu
Single-player alternative to iO — playable solo, no multiplayer required. Shares Action and Indie with iO.
Marble Abduction! is a brand new kind of rolling experience. Hand-crafted levels, intuitive and customizable controls, the highest visual quality and reliable and robust physics make for a truly out-of-this-world marbling experience!
- 4
CheeseCube
Single-player alternative to iO — playable solo, no multiplayer required. Shares Action and Indie with iO.
Embark on an epic journey as a cube, mastering platformer puzzle challenges with humor and style. Glitch through platforms, uncover hidden paths, and find the quickest solution to each level. Put your skills to the test and compete globally as you aim to reach the top of the leaderboard.
- 5
Bionic Bay
Single-player alternative to iO — playable solo, no multiplayer required. Shares Action and Indie with iO.
A scientist uses a unique teleportation instrument to escape an ancient biomechanical world filled with imaginative technology, deadly traps, and hidden secrets.
- 6
DEPLOYMENT
Single-player alternative to iO — playable solo, no multiplayer required. Shares Action and Indie with iO.
An intense competitive top-down shooter: choose your class, capture turrets, progress, and dominate in the arena. top-down shooter, multiplayer shooter, arena shooter, class-based shooter, sci-fi shooter
- 7
Harold
Single-player alternative to iO — playable solo, no multiplayer required. Shares Action and Indie with iO.
As the guardian angel-in-training assigned to watch over Harold, you’re going to need a miracle to get him safely through a series of increasingly challenging obstacle courses in one piece. Shoot lightning, delay the other racers and move heaven and earth to give Harold the boost he needs to win!
- 8
GROOVY
Single-player alternative to iO — playable solo, no multiplayer required. Shares Action and Indie with iO.
Groovy is a robotic sphere that exists in the abstract and crazy world of mechanisms. The game world is divided into two modes - Arcade and Survival, each of them filled with a unique environment, challenges and enemies.
- 9
Turmoil
Single-player alternative to iO — playable solo, no multiplayer required. Shares Indie with iO.
Drill for oil like it's 1899! Turmoil offers players a visually charming, tongue-in-cheek take on the simulation genre inspired by the 19th century oil rush in North America.
- 10
Lake
Single-player alternative to iO — playable solo, no multiplayer required. Shares Indie with iO.
It's 1986 - Meredith Weiss takes a break from her career in the big city to deliver mail in her hometown. How will she experience two weeks in beautiful Providence Oaks, with its iconic lake and quirky community? And what will she do next? It's up to you.
- 11
Lines
Single-player alternative to iO — playable solo, no multiplayer required. Shares Indie with iO.
Lines is an abstract ‘zen’ game experience where form is just as important as function. Place or remove Dots to initiate a colourful race that fills a drawing. The colour that dominates the race wins.
- 12
Team Racing League
Single-player alternative to iO — playable solo, no multiplayer required. Shares Racing with iO.
In this unique 3 on 3 racegame, it's up to you and your teammates to finish before the opposing team does. Mastering the high quality vehicle handling, special abilities, and optimal Team Strategy are key to win the race.
- 13
Briquid
Single-player alternative to iO — playable solo, no multiplayer required. Shares Indie with iO.
Briquid is a simple yet challenging water physics puzzle game. Build bricks, remove them, or change the direction of gravity to get the water to its destination.