The app allows users to raise over 100 types of middle-aged men. Users can discover new species by upgrading facilities and complete an encyclopedia of these characters.
The app features 24 unique rivals, including 12 male and 12 female characters, for players to compete against. It supports both four-player and three-player mahjong, with customizable rules and detailed match statistics for each mode.
The app allows players to repeatedly press a button to achieve the rare "Tenhou" hand in Mahjong. It features a "Kakuren" mode where specific tiles are fixed to increase the chance of achieving Tenhou.
