iO is an abstract physics platformer about size and speed. Grow bigger and smaller in order to solve some of the trickiest puzzles. Reach the exit as quickly as possible and grab a gold medal as your reward!
All Reviews:
Very Positive (100) - 81% of the 100 user reviews for this game are positive.
Release Date:
Dec 5, 2014
Developer:
Publisher:
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Reviews

“A highly addictive brain challenging game that will make you feel smarter as you finish each stage.”
4,5/5 – Gaming Cypher

“iO provides an entertaining romp that’s sure to test both your reflexes and brain power.”
Addictive – True PC Gaming

“iO is a smart physics puzzler that requires brainpower and a lot of trial and error.”
Smart – IGN Benelux

About This Game

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?

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.

System Requirements

Windows
macOS
SteamOS + Linux
    Minimum:
    • OS *: Windows XP+
    • Memory: 2 GB RAM
    • Graphics: DX9 (shader model 2.0) capabilities
    • DirectX: Version 9.0
    • Storage: 250 MB available space
    Recommended:
    • OS *: Windows XP+
    • Memory: 2 GB RAM
    • Graphics: DX9 (shader model 2.0) capabilities
    • DirectX: Version 9.0
    • Storage: 500 MB available space
* Starting January 1st, 2024, the Steam Client will only support Windows 10 and later versions.
    Minimum:
    • OS: OS X 10.6+
    • Memory: 2 GB RAM
    • Graphics: DX9 (shader model 2.0) capabilities
    • Storage: 250 MB available space
    Recommended:
    • OS: OS X 10.6+
    • Memory: 2 GB RAM
    • Graphics: DX9 (shader model 2.0) capabilities
    • Storage: 500 MB available space
* Starting February 15, 2024, the Steam Client will no longer support 32-bit games or macOS 10.14 or lower.
    Minimum:
    • OS: Ubuntu 10.10+
    • Memory: 2 GB RAM
    • Graphics: DX9 (shader model 2.0) capabilities
    • Storage: 250 MB available space
    Recommended:
    • OS: Ubuntu 10.10+
    • Memory: 2 GB RAM
    • Graphics: DX9 (shader model 2.0) capabilities
    • Storage: 500 MB available space

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