Let's carry out computation practice and collect fish. Please catch the fish in which it swims responding to a numerical calculation. It will become game over if a fish arrives to a left end. Calculation becomes quick while you are playing thrilling action game feeling, and not knowing. You can get a high score, so that you answer quickly. If it answers correctly continuously, a background will change and it will rush into score redoubling mode. Please solve a problem with sufficient tempo.If a sea horse appears, please catch in a hurry. A new fish can be obtained if a sea horse is caught. A lot is caught and please complete the collection of fishes.A heart mark is acquirable, if you answer all questions correctly or a score is tweeted. If you have a heart mark, you have a mistake overlooked.You can play practice mode and addition for free. If add-on purchase is carried out, subtraction, multiplication, a mix, and endless mode can be added.This game is ideal for a child's computation practice. An adult also gets the gymnastics of the little head.You can choose ten key mode or select mode as the operation method. Please choose and play the operation method of liking.