The child who starts the study of the multiplication answers the question as though it were a game, and the multiplication can be studied in the future.
The goal succeeds when your answer is a correct answer. When your answer is an incorrect answer, the robot keeper defends shooting.
The super-shot succeeds when answering correctly at short time.
As for the super-shot, a shot different in each level is prepared.
The calculation quickens naturally because the child answers as much as possible at short time.
Only easy mode of the trial version is effective.
