Joshua has introduced new house-rules for space combat in The Expanse RPG. It enhances the space combat gameplay and flow. This hack simplifies mechanics while adding plot protection, and includes …

Joshua Romig has been actively creating content this year, we are no releasing his first Wellerman misadventures series, which includes “Phoebe’s Song” and “Ghost Ship of Th…

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 …

After more than a week of voting, a winner emerged: Ghost Ship of Theseus by Josh Romig! Congratulations Josh! This is a story about some very unnerving unintended side effects of Builder tech on human minds and ships. Check out the winning adventure and the other five submissions from this year's jam over on Facebook! Soon these will join the four previous years' jams in a collected volume here.

My name is Nicole Lindroos, co-owner of Green Ronin Publishing. Diamond … Nicole Lindroos needs your support for Support Green Ronin in Critical Legal Defense

The deadline for 2025 One-Page Adventure Jam "Echoes of the Builders" has come and gone. Six submissions this year, from puzzles to potential planetary doom, the dangers of human curiosity, altered minds, and moral choices. The voting has started on Facebook. In about a week we should know the winner and soon thereafter some dates will be decided for the live-stream of the winning submission.

Some of the content of this post was originally posted with the spaceship collection update, Here they are again, together with some more untested ideas. Ship Qualities The Couple Reactor and Parallel Reactor qualities do the same thing in different ways. I'd suggest you to choose one to test in your game. I prefer the Parallel Reactors for gameplay reasons, but I can see arguments for preferring "Coupled Reactor".

Whether your players' characters are merchants, smugglers, mercenaries, pirates, marines, scientists, or miners, they all share in largely being subservient to some political, ideological, or corporate superiors. Marines of the MCRN protect scientists on missions to the various new worlds beyond the rings, the scientists in turn serve both political endeavours as well as the free curiosity-driven research. UN ambassadors have to broker deals with the OPA on Ceres and Medina, both parties with one or several agendas for the betterment of their peoples or increase of power.

A small update of the tactical spaceship maps (found here) has been finished, as asked for by at least one person a few years back. The colours have been adjusted, and the font has been adjusted to make the damage dice code is more legible. Both the print and VTT versions have been updated, in colour and black and white. Format is still A3 sized. Different dimensions can possibly be made, also different resolutions. Just comment below and let me know.