The good Aura flows through a delicate tube, and it is raining FIREBALLS! You must use metal spikes on the tube to protect the Aura from them. It gets tougher with each successful save. The fireballs bring along stars. Destroy them and you lose twice the points, collect them and you gain twice!
One tap controls the game. Sounds easy, doesn't it? Try out Aura Defence.
How many fireballs can you stop before they crash into our most vital energy source?