The challenge to prove your thieving skills has moved to new environments. You'd better know how to swim, as several rooms you'll face have been completely flooded with water. Plus, of course, there's always an angry dragon to avoid... In Sunken Treasures, an expansion for Clank! A Deck Building Adventure, players explore two partially flooded maps with new Dungeon Deck cards, a new persistent monster to defeat, and new environmental challenges as they venture in the watery depths.