Track stacking time and save highest scores. View average times and analyze performance. Tweet scores directly. Learn stacking techniques with guided tutorials. Set and improve personal stacking goals. Sync across iPhone and iPad devices.
Review and practice with flashcards covering Jōyō , JLPT levels, and additional characters. Decompose into radicals and elements. Take multiple-choice quizzes on meanings, readings, and components.
Play Go on 9x9, 13x13, or 19x19 boards. Compete against AI or friends. Track game history and analyze moves. Adjust settings for board appearance and sound. Save progress and review past games.
Play a sequential by building stacks of ascending cards. Discard all cards in your stock stack to win. Compete against other players to be the first to clear your stack. Use special cards to disrupt opponents' plays.
Build and customize structures using 17 block types and 8 colors. Save up to 3 data sets automatically. Undo accidental actions and restart. Stack up to 5 at once. Rotate and zoom objects with touch controls. Destroy creations in explosion mode.
Play skill-based games in categories like puzzle, word, card, trivia, and arcade. against real players to win real prizes. Track progress and manage in- currency for game entries and withdrawals.