Railroad Ink: Underground – Dobbelspel

Play 14 alternating rounds, starting with a Surface round: 7 Surface rounds with the white Route dice and 7 Underground rounds with the Underground dice. (p. 2)

No. Subway Routes may connect only to other Subway Routes or Railway Exits; Water Pipes may connect only to other Water Pipes or Highway Exits. The two route types never connect to each other. (p. 1–2)

You may duplicate one Underground die result at most once per Underground round, for up to 3 duplications in the game. Duplication applies only to the Underground dice and does not use a Special Route on the Surface board. (p. 2)

A Surface Station drawn over a Water Pipe breaks the pipe, costing 2 points. Drawing a Water Pipe beneath an already-built Station does not break it. (p. 3–4)

In Expansion mode, a Subway Station becomes a Hub only when it shares a space with a Surface Station. In the standalone variant, a Subway Station with no Hub in the same row and/or column must immediately become a Hub. (p. 3)

Each open-ended Subway Route or Water Pipe costs 1 point, and each broken Water Pipe costs 2 points. Routes reaching the board edge are not errors, and broken pipes do not interrupt the Longest Water Pipeline. (p. 4)