Defend the Planet

For detailed instructions, select the tutorial by clicking on ?I do not know how to play? in the main menu.

Use your mouse to aim and click to fire. Keep in mind that every one of the three cannons fires from a different angle!

Click on the blue or green small bars at the bottom of the screen to adjust the recharge rate of your shield and cannon.

Click on ?3X? in order to unleash all of your fire-power upon the enemy!