18CO: Rock & Stock

About this board game

18CO: Rock & Stock is an 18xx railroad game for 3–6 players, with sessions lasting about 420 minutes, in which players build stock portfolios and operate railroad corporations in Colorado.

Corporations race to complete a route from the East to Salt Lake City while players compete for cash and stock value. New corporations can form and take control of old, failing corporations, creating a constantly changing financial and operational landscape.

The game features a Moving Bid Auction, allowing players to increase an already placed bid to a higher value private. Corporations use Incremental Capitalization across varied Par Zones determined by three Corporation Classifications, while corporations can buy and sell shares in other corporations—and in themselves.

• Corporations holding another corporation’s Presidency can perform a Takeover.
• Presidents can buy shares from their own corporations.
• Special tile-lay rules can prevent a third-party corporation from accessing a track.
• Some Green towns can become Brown cities, with results that may help or hurt.
• A revenue-based bonus jump moves a stock price upward rather than farther right.

Track placement is especially important. Players can use the tile rules for upgrading plain track from yellow to green and from green to brown, while blocking opponents from key routes, including a possible path to Salt Lake City.

There is considerable cash flow compared with 1830-based games, and not all corporations are intentionally equal. Investing in corporations that own shares can open additional possibilities, while competing for a route without reliable access can be costly.

When the bank runs out of money, the player with the most cash and stock value wins. In 18CO: Rock & Stock, financial positioning, corporation ownership, takeovers, and carefully timed track lays all shape the race to victory.