Defense Grid Update Released
 

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

Defense Grid April 2011 Portal 2 ARG Updates:

• Two free new and original Defense Grid Levels with new voice acting and story.
  
• Portal's GLaDOS invades the network and brings a new style of level design to Defense Grid.
  
• New computer console off the main menu. Poke around in the old computer archives, try out puzzles, and learn some DG back-story.
  Tesla towers now recharge faster and do more damage.
  

April 13 update:

• CHAS level is now unlocked for everyone!
  
• Recruiting is still important, so keep it up.
  
• Tony has one more trick up his sleeve
  
  Three more clues to find
  

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