Blue Planet: Earth (Free)

In this classic arcade game you race around the globe and defend our blue planet from waves of incoming asteroids. Collect power-ups to increase your firepower and find the golden asteroids to increase your score. Blue Planet: Earth combines classic arcade game-play combined with the 3d graphic capabilities of modern hand-held devices. The game is optimized for play on smart-phones and tablets. Switch smoothly between portrait and landscape orientation and select your favourite touch control system or play with a keyboard. This free version has no ads(!) but the paid version has extra level variety and weapon power-ups.