games – The Expanse RPG Fan Community

Gravity and Origin

Some musings on and toying with more nuanced and variable gravity rules for The Expanse TUE. I suggest allowing characters to move more effectively in typical gravities of their habitats. And suggest moving towards picking native gravity rather than cultural or faction belonging.

Transport Union Edition is out!

The Expanse Transport Union Edition PDF rulebook, released on December 18, 2025. It updates gameplay for the decades between Babylon’s Ashes and Persepolis Rising, while maintaining original rules, the edition improves equipment details, ship combat, and includes significant lore updates. Enhanced art reflects the Expanse universe, enriching overall gameplay.