Pro Mahjong Tsuwamono Advance is a serious Mahjong simulation game for the GBA. It brings the complex strategy of Japanese Riichi Mahjong to the handheld. Players can compete against various AI opponents, each with different playstyles and difficulty levels. The game includes a 'Pro League' mode where players challenge professional ranks, and a 'Free Battle' mode for quick games. It features helpful tutorials and glossaries for beginners, while offering deep statistical tracking for veterans looking to refine their game. Essential for Mahjong enthusiasts.