In this game, you are the leader of a small group of astronauts who are sent on a mission to defend the Earth against an alien invasion. The aliens have already reached the Earth, and it is only a matter of time before they reach the global sky. The world is in danger, and it is up to you to save it. You have to lead your small group of astronauts and defeat all the alien forces that are threatening the Earth.

In this game, you will have to fly in space, fight against an alien invasion, and defend the Earth against the most powerful alien invaders in history. In addition to the world-famous Space Shuttle, you will have to manage your own space station and the crew of the space station, as well as the mission of the space station.

This game has many missions, and they are not easy to complete. It is very important to upgrade your spaceship and your crew to be able to complete the missions. In addition to that, you will have to manage your own finances, as well as the budget of the space station.