Updates to Shatter have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Shatter

• Added steam cloud support for all in-game progress
  
• Fixed a bug where following a link to a web page from a popup within the game would make all other in-game popups attempt to take the user to the same web page
  
• Updated the readme to include additional known issues
  
• Fixed a crash that would occur when detecting certain input devices. A warning is now shown when Shatter detects an incompatible device
  
• Fixed an issue with leader board times for boss rush where times over 40 minutes would wrap back around to zero
  
• Added detection of modified game data. When the user has local modifications to their data Shatter will enter offline mode and will not upload scores
  
• Fixed an issue where Shatter would incorrectly enter offline mode if the user had set their Steam account to appear offline. Shatter will now enter offline mode if Steam is offline