Defend the Earth

You are a veteran space force pilot. One day, a unknown extraterrestrial civilization came and started attacking Earth. Now it's up to you to save the Earth and mankind from alien invaders and asteroids! Will you successfully defend the Earth?

Features:
- Campaign with 20 levels
- Endless - can you survive against never-ending waves of alien invaders and asteroids?
- 4 difficulties (Easy, Normal, Hard and Nightmare)
- Destroy alien ships and asteroids to earn money
- 6 purchasable spaceships
- 4 purchasable upgrades

Destroy alien ships, asteroids and use the money you earn to buy new spaceships and upgrades! Are you brave enough to defend Earth?