Wonder Letters

This is a crossword-style game for children Ages 6 - 11. Players build words from letters rolled on dice. The dice are hollow, however, and are intended to contain small prizes rewarding players for having made words.

From the publisher: "Wonder Letters is the first crossword game where players create words and open WonderLetters to claim hidden prizes. Prizes are customizable - they can be tricks or treats, ranging from motivational stickers or jelly beans to jumping jacks! WonderLetters rounds out the fun with its unique triple-play rule and fast-paced, all-play piggyback round."