Crystallo: Den of Dragons

Crystallo: Den of Dragons adds a new layer of puzzle-solving adventure to the second (dragon) phase of Crystallo. In addition to capturing the Black Dragon, players can choose an additional dragon to do battle with (Mystic, Armored, or Golden.) Polyomino treasure tiles must be placed on top of and within the confines of the dragon puzzle, adding another dimension to the challenge. Defeat both dragons and earn impressive bonuses to your score; fail at either one, and both escape!

—description from the publisher