Long before it was a television show and prior to the book series by James S.A. Corey, The Expanse was originally a game. Now, The Expanse is headed back to its roots, thanks to Green Ronin Publishing, which launched an adaptation of the game on Kickstarter earlier this week.
The Expanse started as a post-to-play RPG, have those posts ever been made available? : r/TheExpanse
Beyond the Ring (Print Hardback Book for The Expanse RPG) - Green Ronin Online Store
An Economist Nitpicks Sci-Fi: Employment in The Expanse - Ordinary Times
The Expanse RPG - Green Ronin Online Store
The Expanse, once a homebrew tabletop RPG, is going legit - Polygon
10 Times The Expanse Revealed It's Actually An RPG
The Expanse - The Verge
The Expanse - The Verge
The Expanse RPG - Green Ronin Online Store
The Expanse: Star-crossed 01 (The Expanse RPG, Actual Play)
Expanse Role playing game. I didn't know this existed : r/TheExpanse
Building The Expanse: How Corey Melds Conflict and Tech – Mythcreants
human Mars: The Expanse
10 Times The Expanse Revealed It's Actually An RPG
10 Times The Expanse Revealed It's Actually An RPG