Waves of attacking Star Heads are destroyed by our Hero.
At the end of every wave:
The Hero can buy gun updates having higher bullet speeds.
He can also buy updates for lesser % health loss.
When a Star Head hits the base the health gets reduced by a certain percentage.
When the health becomes 0 the game ends.
Drag the mouse to move the cursor.
Click the mouse to shoot once.
Release the mouse to stop shooting.