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 monitor flicker seems to be fixed, feedback would be appreciated since we've only been able to test it on 2 devices!
  
• Hopefully fixed a longstanding edgecase with Steam Cloud saving. The issue was caused by a discrepancy between the cloud file and the local registry storage, if the cloud files were identical it would ignore (the potentially better) local scores.
  
• Various small bugfixes related to achievements
  
• Optimized performance of various effects
  
• Fixed performance issue on level completion, you should no longer get an FPS dip or program hang when the level completion menu opens up.
  
• Added surprise after achieving 150 golden medals
  

It has been almost 4 years since the game was launched on Steam, but while testing and playing the game, we fell in love all over again with iO. From trying to improve some high scores to figuring out alternative ways to beat a level. Hopefully you will enjoy the game as much as we do, have fun!