Green Planet is a fun skills game where you're in charge of protecting the world from asteroids floating around space. The main goal is to pick up the debris left by the explosion of these elements in the atmosphere.
The story puts you in the middle of a deserted wasteland that you have to bring back to life. To do so you have to help the make vegetation grow back and give the planet its life back. Although your main task is to fill the planet with vegetation again, you also have to pay attention to two other important things: destroying any dangerous object that approaches, and getting rid of the asteroid debris on the ground so there's room to keep planting.
You can improve both the way you plant and clean, as well as your defense canon. The more asteroids you destroy, the more points you get and the more you can invest in upgrades to help you pick up objects faster, shoot with more power, and plant more efficiently. Remember, you have to improve your team and work hard if you want to be more efficient.