This is a story about earth defense!
Comets are coming!
Use your fingers to save the earth!
How to play:
1. Tap on screen to create gravity orbs. orbs will capture small comets.
2. Drag a gravity orb to rotate it along with any comet trapped inside.
3. Tap a gravity orb again to close it, release all comets at high speed.
4. Open an energy shield to protect the earth for 10 seconds.
5. Destroy all comets on the screen by push the missile button.
6. The big comet can not be captured by gravity orb, fling a small one to destroy it.
7. collect the gems by comet, you can buy energy shield using gems.