Kemono Mahjong for Android
A full implementation of Riichi Mahjong, and not a solitaire game where you have to find two identical tiles. 4 people take turns in participating in the game. There are several levels of difficulty, and for beginners there is a detailed training to learn rules and basic mechanics of the game.
The built-in assistant also offers to view all available travel options and helps you choose the best one. There is a classic and simplified tile set that will reduce the entry limit for new players. All games take place in battles with artificial intelligence, so the game does not require an Internet connection.