- Fixed Supreme Strategist can now be earned.
- Fixed Temporal Tower modifications from the Command Decision map will no longer carry over to other maps.

New free Defense Grid Community Challenge Update released:

- Mission Selection UI has been simplified, you can now see all medals for all modes at a glance
- New Fully Loaded game mode added: All towers and all upgrades are available (suggested by community member Salmusco)
- New Frozen Core game mode added: Cores do not float back to the housing
- New Shredder game mode added: The aliens keep coming. And you don’t earn interest.
- New Balanced Build game mode added: You need to build one of each tower type before you can build a second of the same type
- 32 new missions added with leaderboards
- Fully Loaded missions added to all early levels up to and including Center of Power (except for Out of Fuel)
- Frozen Core missions added to Ancient Research, Long Descent, Out of Fuel, Guardian’s Fall, Crossed Signals, Waste Disposal, and Last Stand
- Shredder missions added to Ancient Research, Flight Plan, Cold Storage, Guardian’s Fall, Center of Power, Standing Order, Crossed Signals, Turnabout, and Lockdown
- Balanced Build missions added to Cold Storage, Standing Order and Lockdown
- Out of Bullets missions added to Turnabout and Lockdown
- Fix: voice over volume control affects more audio lines than before
- Prepared for more content ahead
- Fix: Top of the Class achievement now able to be earned and description changed to reflect the new level names and requirements
- Fix: Few and Proud achievement clarify requirements needed
- Fix: Splash screens are skippable again
- Fix: Borderlands levels Entanglement and Infiltration let you build towers again
- Fix: No more purple textures when playing You Monster level in a low-res graphics level

• Defense Grid now supports Steam Cloud! Your local profiles will be automatically merged with whatever is in the cloud
  
• Splash screens can be skipped by pressing ‘esc’, ‘space’, or ‘enter’
  
• Leaderboard UI has been cleaned up and simplified
  
• There is now a UI setting to switch the behavior of the fast forward button between “press and hold” and “toggle on/off”
  
• All modes of all levels are now unlocked by default
  
• Shortcut keys added for building towers, selling, and upgrading
  
  • 1 : build Gun tower without UI
    
  • 2 : build Inferno tower without UI
    
  • 3 : build Laser tower without UI
    
  • 4 : build Temporal tower without UI
    
  • 5 : build Meteor tower without UI
    
  • 6 : build Cannon tower without UI
    
  • 7 : build Tesla tower without UI
    
  • 8 : build Missile tower without UI
    
  • 9 : build Concussion tower without UI
    
  • 10 : build Command tower without UI
    
  • U : upgrade without UI
    
  • Shift-U : sell without UI
    
• Cleaned up ARG content
  
  • Voice over volume slider now affects GLaDOS in the CHAS levels
    
  • Console remains in, but passwords have been removed
    
  • Potatoes are now gone
    
• Tesla tower now does 2x damage vs. shields
  
• Fixed a crash with the new leaderboards
  
• Prepared for summer camp
  

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
  

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

• Tesla towers fixed and updated
  
• Console fixed and updated
  
• Recruits fixed and updated
  
• CHAS levels fixed and updated
  

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

• Something has fixed much of the file corruption...
  
• D and G glyphs were swapped. Fixed now. Oops.
  
• Subtitles should display properly now.
  
• #potatofoolsday
  

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

• Profile is now backed up after each content update
  
• Increased the overall number of .dgp files in the game folder
  
• Modified some of the menus to better use vertical space
  
• Made the front end more savory
  

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

• Added support for future DLC.
  
• Fixed performance problems related to ATI video cards.
  

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

• Support for DLC is enabled. Check out the new FREE DLC pack, Borderlands! Four challenging levels new to Steam players.
  
• Upgraded leaderboard performance - Defense Grid now uses the official Steam leaderboards. Unfortunately, this change resets all existing leaderboard entries, but the good news is that all of the leaderboards are wide open and waiting for your high scores to post. Defend the cores and show others how good you are.
  
• Corrected a bug in which Cannon towers would sometimes fire twice as often when using fast forward.
  
• Fixed an issue in which AI audio would still play even if the Voice Over volume was turned all the way down.
  
• Fixed an issue that prevented the Voice Over volume slider from responding to mouse input.
  
• The Achievements button on the Main Menu will now take the user directly to their stats and achievements page for Defense Grid.