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Circuit Defenders is a fast paced 3D Tower Defense game, where your challenge is to defend computer circuits from attacking virus armies that are infiltrating the circuits via the communications port.

You have an assortment of defense towers at your disposal, and the ability to upgrade them as needed to ensure you can withstand the enemy onslaught.

Amazing built-in Circuits - Play any of the TWELVE circuits to play on, or go to the in-game user level gallery and select new levels from there to play, or use the in-game level creator to create and publish your own levels!

Create your own Circuits - Use the built in Level

What's New

Note: Circuit Defenders is now exclusive to the MAS. The 'Download Now' link above points to a demo of version 2.2.7.

Version 2.4.2:

  • Fixed saving of levels (only effected some players)
  • Fixed some button heights in level editor
  • Added ability to save username in level editor
  • Game now remembers resolution and fullscreen modes correctly
  • Cleaned out some of the user gallery levels


Mac OS X 10.6.6 or later

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Circuit Defenders User Discussion

3.8 6


Current Version (2.x)


Downloads 16,503
Version Downloads 2,368
License Demo
Date 09 Apr 2011
Platform OS X / Intel 32
Price $1.99
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