Game math for boys and girls.
Fight against enemy spaceships by quickly solving math problems.
Each correct answer is one shot. Enemy ships are variously strong and fast.
The larger enemy ship, the more difficult the task. Each victory increases your rank.
You must go from "Airman" to "General of Air force".
As you increase your rank, the tasks become more difficult, but your ship also becomes stronger and more powerful.
Good luck!