iO (PC/MAC/LINUX) Steam Download
Runs on Windows
Windows Runs on Windows
MAC Runs on MAC
Linux Runs on Linux
Play on XBOX 360
Play on Wii U
Play on XBOX ONE
Play on Series X|S
Play on PS3
Play on PS4
HTC Vive Support
Oculus Rift Support
Windows Mixed Reality Support

Single Player Single Player
Multi-Player
Cross-Platform Multiplayer
Local Co-Op
Downloadable Content
In-App Purchases
Controller Support Controller Support
Achievements Achievements
Steam Trading Cards Steam Trading Cards
VR Support
Steam Workshop
Cloud Saves Cloud Saves
Stats Stats
Valve Anti-Cheat Enabled
Steam Leaderboards Steam Leaderboards
Includes Level Editor
Commentary Available
Captions Available
Action Action
Adventure
Fighting
Hidden Object
Horror
Family Friendly
Platformer Platformer
Puzzle Puzzle
Racing Racing
Retro
RPG
Shooter
Simulation
Sports
Strategy
Antivirus and Security
Animation & Modeling
Audio Production
Languages
Photo Editing
Reference
Typing
Video Editing
Video Production
Utilities
Educational
Game Development
Design and Illustration
Business and Office
Operating System
Includes Soundtrack
Includes Manual
Download Download

The content of games with a PEGI 3 rating is considered suitable for all age groups. The game should not contain any sounds or pictures that are likely to frighten young children. A very mild form of violence (in a comical context or a childlike setting) is acceptable. No bad language should be heard.
Video games that show violence of a slightly more graphic nature towards fantasy characters or non-realistic violence towards human-like characters would fall in this age category. Sexual innuendo or sexual posturing can be present, while any bad language in this category must be mild. Gambling as it is normally carried out in real life in casinos or gambling halls can also be present (e.g. card games that in real life would be played for money).
Game content with scenes or sounds that can possibly be frightening to younger children should fall in this category. Very mild forms of violence (implied, non-detailed, or non-realistic violence) are acceptable for a game with a PEGI 7 rating.
This rating is applied once the depiction of violence (or sexual activity) reaches a stage that looks the same as would be expected in real life. The use of bad language in games with a PEGI 16 rating can be more extreme, while games of chance, and the use of tobacco, alcohol or illegal drugs can also be present.
The adult classification is applied when the level of violence reaches a stage where it becomes a depiction of gross violence, apparently motiveless killing, or violence towards defenceless characters. The glamorisation of the use of illegal drugs and explicit sexual activity should also fall into this age category.
A U film should be suitable for audiences aged four years and over, although it is impossible to predict what might upset any particular child. U films should be set within a positive framework and should offer reassuring counterbalances to any violence, threat or horror. If a work is particularly suitable for pre-school children, this will be indicated in the BBFCinsight.
General viewing, but some scenes may be unsuitable for young children. A PG film should not unsettle a child aged around eight or older. Unaccompanied children of any age may watch, but parents are advised to consider whether the content may upset younger, or more sensitive, children.
Films classified 12A and video works classified 12 contain material that is not generally suitable for children aged under 12. No one younger than 12 may see a 12A film in a cinema unless accompanied by an adult. Adults planning to take a child under 12 to view a 12A film should consider whether the film is suitable for that child. To help them decide, we recommend that they check the BBFCinsight for that film in advance. No one younger than 12 may rent or buy a 12 rated video work.
No one younger than 15 may rent or buy a 15 rated video work.
No one younger than 18 may rent or buy an 18 rated video work. Adults should be free to choose their own entertainment.
Steam Price:
£4.29
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Our Price: £1.99

The price include free UK Delivery
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  • Description
  • Media
  • Languages
  • System Requirements
  • How Do I Download?

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

  • 150 challenging levels to solve.
  • 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.

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

System Requirements

Windows

MINIMUM:
  • OS: Windows XP+ 
  • Memory: 2 GB RAM 
  • Graphics: DX9 (shader model 2.0) capabilities 
  • DirectX: Version 9.0 
  • Hard Drive: 250 MB available space
RECOMMENDED:
  • OS: Windows XP+ 
  • Memory: 2 GB RAM 
  • Graphics: DX9 (shader model 2.0) capabilities 
  • DirectX: Version 9.0 
  • Hard Drive: 500 MB available space

Mac OS X

MINIMUM:
  • OS: OS X 10.6+ 
  • Memory: 2 GB RAM 
  • Graphics: DX9 (shader model 2.0) capabilities 
  • Hard Drive: 250 MB available space
RECOMMENDED:
  • OS: OS X 10.6+ 
  • Memory: 2 GB RAM 
  • Graphics: DX9 (shader model 2.0) capabilities 
  • Hard Drive: 500 MB available space

SteamOS + Linux

MINIMUM:
  • OS: Ubuntu 10.10+ 
  • Memory: 2 GB RAM 
  • Graphics: DX9 (shader model 2.0) capabilities 
  • Hard Drive: 250 MB available space
RECOMMENDED:
  • OS: Ubuntu 10.10+ 
  • Memory: 2 GB RAM 
  • Graphics: DX9 (shader model 2.0) capabilities 
  • Hard Drive: 500 MB available space

This product currently supports the following languages:

Language information is not available for this game.

Windows

Mac

Linux

Steam

Steam key activation & download guide

Follow these steps if you purchased a Steam Key. Steam Gifts use the separate gift-redemption instructions.

  1. Get Steam ready

    You will need the Steam desktop client installed on your computer. If it is already installed, simply open it. Otherwise, install Steam before continuing with the activation steps below.

  2. Sign in to your Steam account

    Open Steam and sign in, or create an account if you do not have one. Check that you are using the account on which you want to activate your purchase.

  3. Open product activation

    In the Steam client, choose + Add a Game at the bottom-left, then Activate a Product on Steam. Follow the on-screen prompts.

  4. Enter your Steam key

    Copy the product key supplied with your purchase into the activation field and continue through the confirmation. Use the product key, not your order number.

  5. Download and play

    Open your Steam Library, select the activated game and choose Install. Follow the download and installation prompts, then launch the game from your Library.

Having trouble activating your key? Check that you copied the full product key and entered it in Activate a Product on Steam, not the wallet-code field. If you still need help, contact our support team with your order number and the error message shown. Keep your product key private.

Publisher: Gamious