System Defender is a mini-game in Club Penguin, stylized after the tower defense genre, that is only accessible through the EPF Command Room. In System Defender, you have to destroy the enemies from getting into the system. System Defender was originally created to destroy bots from getting into the EPF system.
In the game there are three types of cannons. There are reds, that shoot fast; oranges, that have a long range; and purples, that have more damage. When cannons are placed into sockets, they have the ability to destroy bugs. Each cannon type can be upgraded to three levels.
There are basically 2 types of enemys: bugs and bosses. Bugs have less life than bosses, but they still have the ability to damage the system. These 2 types of bugs are the colors: red, orange and purple. See the gallery below.
If a certain number of bugs hit the core, the game ends.
There is a level where you have to defeat the Ultimate Protobot. It is a robot that was destroyed in 2008, and was rebuilt by (most probably) Herbert P. Bear. He will send lots of waves of bots. Try upgrading each cannon to the most, which causes the cannons to be stronger and make more shots, making it easier to defeat bots.
The starting screen while being attacked.
The levels screen as of January 13, 2011
The purple enemy.
The red enemy.
The orange enemy.
