Math Planet Defense

Learn math (addition, subtraction, multiplication, division) from beginner to expert by playing a spaceship game.Features:* Learn math (addition, subtraction, multiplication, division) from beginner to expert.* Learn planets (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto) within our Solar System.* Select different spaceships with unique gun and laser.* Difficulty levels and scoring based on planets.* Unlock new planet after complete the score mission.* Top score is recorded with your name, and you can have rank after complete a mission. You can compete with your family to achieve the top scorer.更多