It is a major card game in the world, and has been selected as an additional competition candidate for the Olympic Games.

As a genre, it is a trick-taking game like Hearts and Napoleon, and it is very strategic.

This app reproduces the duplicate that competes with other users by a unique method of competing for the same hand on the net record.

In addition, you can play Chicago mode, where you compete for high scores locally, and rubber mode, where you play with the rubber method.

Since various play data are also recorded, it is possible to analyze your own play content.

Since it was created by Japanese people, it has been completely translated into Japanese!