3851 Atlantis Treasure is a LEGO Games set released in July 2010. Despite the similar names, it is not related to the Atlantis line. In the game, players roll the die to plot a course for their submarines around the board, sabotaging the efforts of other players and attempting to be the first to collect three crystals. Unlike most LEGO Games of this nature, the board is entirely brick-built rather than using a baseplate.