iO update incoming!
We finally found the time, resources and nerve to fix some things that should have been fixed a long time ago. Without going into too much detail about why we couldn't have fixed it earlier, here's the list! 144mhz moni…
Steam
iO
Also known as i, iO, io
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!
Last update
15 May 2026
Players now
0
Original sources
1
Latest update
Latest updates
Update history
Browse past updates and patch notes for this game.
- October 2015
- iO is back! The update is LIVE. It's been a long time coming, but it's here now and we are quite happy with it. Hopefully you are too! This content update includes a number of things, but most importantly, this: 75 new…Small Update / Patch Notes
- iO is back! The update is LIVE. It's been a long time coming, but it's here now and we are quite happy with it. Hopefully you are too! This content update includes a number of things, but most importantly, this: 75 new…Small Update / Patch Notes
- iO is back, bigger and better than ever! At then end of next week iO will get a huge update. This update includes a big facelift for the game, a lot of new content, a few new mechanics and an extra hard challenge. And a…
- iO is back, bigger and better than ever! At then end of next week iO will get a huge update. This update includes a big facelift for the game, a lot of new content, a few new mechanics and an extra hard challenge. And a…
- May 2015
- We just updated the latest iO build with some neat features: Steam Cloud Saving This feature was requested by many players. The level times are now saved in the Steam Cloud instead of locally. So wherever you play, you'…
- We just updated the latest iO build with some neat features: Steam Cloud Saving This feature was requested by many players. The level times are now saved in the Steam Cloud instead of locally. So wherever you play, you'…
- April 2015
- Hi all, Please note that we will be wiping the Global leaderboards soon. So, if you just need a couple of Gold medals, go get them now! Achievements will be saved of course. Why are we doing this?!?!? One of the main re…
- Hi all, Please note that we will be wiping the Global leaderboards soon. So, if you just need a couple of Gold medals, go get them now! Achievements will be saved of course. Why are we doing this?!?!? One of the main re…
- January 2015
- We’ve been working hard on improving the game experience based on valuable feedback from our players. Thank you all for your support! Here’s an overview of the fixes in this quite big update. Bugfixes - Accelerating bug…
- We’ve been working hard on improving the game experience based on valuable feedback from our players. Thank you all for your support! Here’s an overview of the fixes in this quite big update. Bugfixes - Accelerating bug…
- December 2014
- There was a slight slowdown with the leaderboards, but they are live and available now on the iO Community Page! And don't worry, all times since release are safe and sound ;) Good luck racing your friends! http://steam…
Gallery
In-game media
Achievements
Community progression
Top picks from 39 Steam achievements, sorted by player unlock rates.
- Lets get this party startedUnlock the full game52.4%
- First BloodWin a gold medal36.7%
- 10 down, 140 to goPlay 10 levels34.8%
- Bronze BeautyWin 10 bronze medals32.7%
- Big ShotExpand your ball 100 times32.3%
- The little manShrink your ball 100 times31.2%