This is a HD version of game, which was released 3 years ago at XBOX. This version has many improvements, mostly with visuals and usability. But also I had forced to remove some features. The full change-list bellow.

Good news:

• Remastered visuals
  
• Improved UX with various hints (for buttons and in-game elements)
  
• New levels selection - it's more easy to navigate now
  
• Now user can view his best solution for each level with "replay record" option.
  
• Added Russian language
  
• Full HD support
  
• New music for some locations (e.g. Infected and Unallocated sectors)
  
• Added intro and outro cutscenes

Bad news:

• Old save files are incompatible with new version of the game, sorry =(
  
• Removed Achievement "HTTP to HTTPS" which had no sense. All other achievements are the same except "#100 (Continue)" which now can be obtained by completing "Rules" puzzle at the main menu.
  
• Removed in-game leaderboards. But I'm ready to return them by massive users request.

Despite this all, I hope, all of you will enjoy with updated version of this game!