【体験版】ペンギン計算～整数計算編～

The game content is introduced on the official Youtube.
Developed by a former math school instructor and active doctor, this is a game that makes integer calculations the most fun. With this product, you can play up to stage 3.

It is designed to be enjoyed by everyone from kindergarteners studying calculus for the first time to middle school entrance exam students at the most difficult level. It is also suitable for a wide range of people, including adults who have practiced calculations and people who want to do calculations for brain training.

Once the player has mastered the calculation stage, they will immediately level up and be able to advance to the next stage.
There are also mini-games to improve your calculation and arithmetic skills, such as solving 100 simple calculation problems in a row with ``100 Shooting'' or learning how to determine multiples while catching fish.