Get out of the classroom and get some practical experience in all-important space defense.
Place towers and turrets with your mouse to protect your Core Generator from the invaders. There are four different tower bases that can be purchased over time, each capable of holding one of three specialized types of turret, each aimed at destroying a certain type of enemy. Click on the towers to open the tower menu on the right and click the plus signs to upgrade Damage or Range, or sell or power down towers when you need to.
Rate this game!
Something went wrong, please try again later.
Just a few more seconds before your game starts!
This is taking longer than usual.
Want to wait a bit more, or reload the game?
Oops, something went wrong. Try again!
Oops, something went wrong while loading your game. Try again!
You need this plugin to play the game.
After the upcoming message from our sponsor, you can keep playing this game for free!
This game uses modern browser features which your browser doesn't support.
For the best results, please get the latest version of Google Chrome.