The galaxy is under siege by the Cosmic Crunchers! Only your superior maths skills can power up your ship's laser cannons and blast them into oblivion. Defend the cosmos, one equation at a time!
Rules & Controls
A maths question appears at the bottom. Shoot the invader with the correct answer!
Clear 5 waves of invaders to earn an extra life!
Keyboard Controls: Use ◀ and ▶ arrow keys to move, and Spacebar to fire.
Touch Controls: Use the on-screen buttons to move and fire.