Ravensburger tiptoi Letter Castle is a fun and educational game for children aged 4 to 7, perfect for learning about letters and sounds. In this game, players must find the secret door where the giraffe is hiding. Using the interactive tiptoi pen, children can listen to the sounds of the letters and find clues to defeat the dragon. The game is designed to help children develop their language skills and practice recognizing letters. The game includes an interactive game board, instructions and the necessary tiptoi pen.