Mahjong Cub3d (Usa) (マージャンキューブ3D USA) is a Nintendo 3DS game developed by D3 Publisher and released in Japan in June 2012. The game features a unique 3D art style and a variety of classic Mahjong rules, including the popular American style. Players can compete against computer opponents or with friends in local multiplayer. The game also includes a tutorial mode to help new players get familiar with the rules and strategies. Mahjong Cub3d (Usa) features a variety of challenging levels, and players can customize the rules and difficulty to their liking. The game also includes a variety of online leaderboards, allowing players to compete with others around the world. Mahjong Cub3d (Usa) is a great way to experience the classic Mahjong game with a modern twist.