Alien invasion is a 2D space shooter game for Android. You control small spaceship and shoot aliens. Each new level introduce new kind of alien. Some aliens drop gold which can be used to improve ship. Some aliens can shoot back. Use on screen arrows to move ship and press fire button to shoot nearest alien. Game is best playable in landscape mode. When you collect enough gold you can buy ship improvements in the shop. Aliens cause damage to ship when they are too close or when they shoot at yo