
- BGG rank
- BGG #717
- BGG rating
- 8.0
Shikoku 1889
- 2–6 players
- 180–240 min
- Complexity 3.8/5
- 2004

2020
Rules assistance for 18CO: Rock & Stock
Plain-language explanations of turns, card effects and disputed situations, with official source references and saved question history.

What would you like to know?
Answers come from the official rulebook, with the page to check.
18CO: Rock & Stock is a board game released in 2020 for 3–6 players and 240–420 minutes per game. It was designed by R. Ryan Driskel and its main mechanics are Auction / Bidding, Tile Placement, and Network and Route Building.
18CO: Rock & Stock is an 18xx game where three to six players compete to earn money and build the best stock portfolio by investing in and operating railroad Corporations within the state of Colorado. Corporations race to complete a route from the East to Salt Lake City. New Corporations form and take control of old, failing Corporations. The player with the most cash and stock value when the bank runs out of money wins the game. Highlights Moving Bid Auction allows players the option of escalating their already placed bid to a higher value private. Incremental Capitalization in varied Par Zones based on 3 Corporation Classifications. Corporations can buy and sell shares of other Corporations, as well as itself. Corporations owning the Presidency of another Corporation perform a Takeover. Presidents can buy shares from their Corporations. Tile lay prevents a third-party Corporation from accessing play track. Some Green towns may be upgraded to Brown cities, which may help or hurt. A bonus jump based on revenue pushes a stock price up, not further right. Failing corporations are actioned for Takeover by other Corporations. Gameplay Notes There is a lot of cash flowing in this game, unlike 1830-based games. Not all corporations are created equal, intentionally. Corporations owning shares open up a lot of gameplay possibilities that can be missed if you ignore them. Players often forget the tile lay rule for upgrading plain track tiles from yellow to green/green to brown. Utilize the unique track lay rules to keep opponents from using important track, such as a route to Salt Lake City. Be careful on competing for a route you won't be able to access. Consider investing in corporations likely to complete such routes. —description from the designer
18CO: Rock & Stock supports 3–6 players according to the catalogue. This range comes from the publisher’s listed player count, so the game can be set up for any group size within it. Some setups, rules and scoring details may still vary by player count, so check your edition’s rulebook for the exact configuration.
The listed playing time for 18CO: Rock & Stock is 240–420 minutes. This is the publisher’s estimate for a full game. The actual duration depends on the group, the player count and familiarity with the rules: first sessions usually run longer, while experienced groups often finish faster. Setup and teaching time are not included in this estimate.
18CO: Rock & Stock has a complexity rating of 4.0 out of 5 from BoardGameGeek players, which makes it a heavy game. The rating reflects how much rules knowledge, planning and decision-making a typical game demands. Expect a longer first teach for heavier games, and use a preparation guide before game night.
18CO: Rock & Stock belongs to these categories: Economic, Trains, and Transportation. Its main mechanics are Auction / Bidding, Tile Placement, and Network and Route Building. Categories describe the theme and setting of a game, while mechanics describe what players actually do on their turns. Each mechanic links to a catalogue hub with similar games, which helps when you want something comparable.
The credited designers of 18CO: Rock & Stock are: R. Ryan Driskel. These credits come from the published game data and name the people responsible for the game’s design, not its illustrators or publishers. Designer pages on MeepleRules collect other titles by the same designers, which helps when you enjoy a game and want to find similar ones.
The catalogue lists 18CO: Rock & Stock as a base game. It can be played on its own with the components in the box and does not require any other title. Expansions, if any exist, add new content or rules on top of it and are listed separately in the catalogue with a link back to this base game.