iO is a physics platformer in which you control a ball. By growing or shrinking the ball you can influence its speed and weight. Use these mechanics to gain momentum and make your way through the levels. Toy with the laws of physics, solve the puzzles and reach the exit as quickly as possible. Can you win the gold medal in all levels?
Key Features:
225 challenging levels to solve, including the extra tough Impossiball Levels.
Crafty mechanics like inversed gravity, portals, tricycles and movable objects.
Leaderboards in all levels to race against your friends and other iO players.
Bronze, Silver and Gold medals to earn.
Dual Stick controller support.
windows Minimum
OS: Windows XP+
Memory: 2 GB RAM
Graphics: DX9 (shader model 2.0) capabilities
Storage: 250 MB available space
Directx: Version 9.0
windows Recommended
OS: Windows XP+
Memory: 2 GB RAM
Graphics: DX9 (shader model 2.0) capabilities
Storage: 500 MB available space
Directx: Version 9.0
macosx Minimum
OS: OS X 10.6+
Memory: 2 GB RAM
Graphics: DX9 (shader model 2.0) capabilities
Storage: 250 MB available space
macosx Recommended
OS: OS X 10.6+
Memory: 2 GB RAM
Graphics: DX9 (shader model 2.0) capabilities
Storage: 500 MB available space
linux Minimum
OS: Ubuntu 10.10+
Memory: 2 GB RAM
Graphics: DX9 (shader model 2.0) capabilities
Storage: 250 MB available space
linux Recommended
OS: Ubuntu 10.10+
Memory: 2 GB RAM
Graphics: DX9 (shader model 2.0) capabilities
Storage: 500 MB available space
To activate the game, you need a Steam Account
Login or register at the official Steam Website and download Steam client
Install and start application, login with your Account name and Password
Click the Games Menu.
Choose Activate a Product on Steam...
Follow the onscreen instructions to complete the process
After the successful code verification, go to the "MY GAMES" tab and start downloading.
News & Updates
2026-01-27
Prepare to Escape Death in Resident Evil Requiem
The fan-favorite survival horror series, both developed and published, by Capcom is coming back for its 9th time in the nearly 30 years of its existence, by continuing the main storyline further with the Resident Evil Requiem release on 27th of February. We are going to once again go to one of the most iconic locations in the Resident Evil series - the classic setting of a destroyed Racoon City…
Latest Monster Hunter Wilds Update in Collab with Stories 3
Last month, Yo Sujioto, the Monster Hunter series producer talked about the new and upcoming title’s Monster Hunter Stories 3: Twisted Reflection release date, which is coming on March 13th 2026, along with sharing the latest about Monster Hunter Wilds updates and the special collaboration event between the two titles, with which you could unlock two additional sets of cosmetics…