Redditor uses coding agent to finish an obscure 18xx Pennsylvania railroad game

natep1098 · reddit · 2026-09-06

Reddit user natep1098 wanted to play an obscure Pennsylvania railroad 18xx board game online, so he fed the rules and an unfinished 18xx.games implementation to a coding agent.

After several token-limit resets (on a Plus subscription), he was playing his fork in the browser, with hotseat multiplayer supported via the 18xx.games codebase. He plans to share instructions for private launches, publish a link, and submit the project for peer review tomorrow.

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