Get ready to go underground with the Underground Expansion Pack for Railroad Ink! If you already enjoy the vibe of connecting exits and drawing routes on the surface board, this expansion brings a whole new layer of challenges. With four brand-new dice, you can dive into a completely underground mode, swapping the normal dice for these that offer subway routes and water pipes. It's a totally different way to score and think about your connections, exploring what lies beneath the earth.

But the fun doesn't stop there! You can also use these special dice in conjunction with the original dice, but with an important rule: no mixing! This means you'll need two boards per player: one for the surface, following the classic rules, and another for the underground, where the new dice and their rules come into play. This duplication of boards and managing two play areas simultaneously adds extra complexity, requiring sharper planning. It's an expansion that truly broadens the possibilities of Railroad Ink, offering new strategies and a welcome freshness for those who have already mastered the base game. Perfect for those seeking more depth and a new way to play their favorite dice game.