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■About game Aliens are coming to earth from space. Protect your castle with your thunder machine. For activate machine, answer questions correctly. Some aliens are wearing costumes to hide from you. Be careful! If you can catch special aliens, you will get extra points. You can improve your arithmetic skills and you will have a lot of fun! The mathematics level is about middle school and junior high school. Kindergarten / preschool children at all ages, primary school and elementary school students can play 1st levels. Helps to improve memory and brain skills. Recommended by teachers, best for boys, girls and kids. ■45 levels with 4 operations Addition. subtraction, multiplication, division and mixed levels. ■How to play 1. Question and three answers will display on thunder machine. 2. Please select correct answer from 3 buttons. 3. If your answer is correct to question, you can attack aliens and protect your castle. 4. If you mistake the answer, you lost a star. game will finish after lost all stars. 5. A special alien will appear in each level. If you attack these aliens, you can get extra points. ■Game center support: You can compare your new best top score with others in the world. ■Unlock all levels First 5 levels are free to play, unlock other levels for more fun.
