This first mini-expansion of Rollecate adds a new challenge to the game: broken rails. The four new cards in the expansion replace cards from the base game, adding more challenge and difficulty. Every time the Rollecate crosses a broken rail, it will derail and force the active player to take an (extra) penalty card. This expansion allows players to build barricades for other players. But they will have to be careful not to become the victim of their own foul play! —description from the publisher