``Jakuou Mahjong'' is a two-dimensional style mahjong game. [You can play for free] In-game currency—“copper coins”. You can earn them for free by playing in-game, logging in, completing missions, bonuses, etc. You can play to your heart's content in all modes without paying. [Online game] You can enjoy 4-person mahjong and 3-person mahjong with players from all over the world over the Internet. Gain experience by playing games and improve your mahjong skills! There are game modes such as "Challenge Match", "Ranked Match", "Friend Match", and "CPU Battle", so you can play in your favorite mode. You can work hard against mahjong god-like players, have fun online with friends, or practice silently against the CPU! If you want to easily hone your mahjong skills, "Jakuou Mahjong" is perfect for you! [Beginners welcome] In addition to detailed and easy-to-understand tutorials, we have a simple practice mode for beginners and a practice mode against the CPU. There are role introd...