OrbitalDefender

There is a peaceful blue planet and a peaceful stellar defence system on it. Some wicked aliens try to invade it. Protect your planet and defeat the Big Boss to achieve victory. Try to beat your record.

Features:
- Simple gameplay
- Power-ups
- Nice physics
- A bunch of special effects
- Free game. You can turn off ads (please don`t do that)

How to play:
- Use your gun to destroy invaders
- Top bar indicates hit points of your planet
- Increase score multiplier by hitting enemies. Hitting planet is harmless for Hp but not for multiplier.
- Asteroids contain shield and hp powerups