18XX

The games 2038, set in the future, and Poseidon and Ur, 1830 BC, both set in ancient history, are also regarded as 18XX titles as their game mechanics and titling nomenclature are similar despite variance from the common railroad/stock-market theme.

Some typical areas of difference are:[5] A number of conventions have at least some emphasis on 18XX games, including the Chattanooga Rail Gaming Challenge, held in January or February in Chattanooga, Tennessee and run by Mark Derrick.

[6][7] 18XX games also figure prominently in various "RailCon" and "Puffing Billy" tournaments at many conventions.

Many games in the genre are implemented on 18xx.games , which is open-source and supports both multiplayer and local play.

The website BoardGameGeek lists 293 titles (including games and expansions) in the series as of January 2025.