Dungeons & Co.

From BoardGameGeek:

Welcome to Dungeons & Co. a tile placing board game for 2-4 players. Players have been hired by evil empress Hornspike to create the best dungeon in all of the land. As a Dungeon Contractor, players will take turns drafting tiles and placing them in their dungeon. They'll keep in mind damage, weapon range and overall synergy to create the best dungeon possible. After tiles have been placed, players will take turns fending off adventurers wandering in to steal your gems. Players will gain/lose gems based on if they can defeat their adventurers. The player at the end of 12 turns with the most Gems wins. -description from designer