star-wars-latex VS nipajin

I tried the Genesis RPG latex template, which is quite nice : https://github.com/n1c0x/star-wars-latex/tree/master/dev/GenesysRPG

> Creating a theme for tabletop role-playing games would take some elbow grease

The article links to several, including a convincing reproduction of basic Wizards of the Coast house style for D&D 5E:

https://github.com/rpgtex/DND-5e-LaTeX-Template

Here's another 5E one with additional sidebar styles:

https://github.com/anoderay/DND-5e-LaTeX-Template/

Also 5E-inspired, with a template for card accessories:

https://github.com/Krozark/RPG-LaTeX-Template

A 5E-compatible character sheet:

https://github.com/matsavage/DND-5e-LaTeX-Character-Sheet-Te...

CTAN also has packages for Basic D&D-inspired typesetting (rpg-module, also linked from the article), GURPS (gurps), generic hex boards (hexboard), and wargame hex boards with counters (wargame).

There are also indie TTRPGs that've shipped using custom LaTeX templates; this one has CC-BY licensed source: https://github.com/ludus-leonis/nipajin

And the blog author's own, with a more restrictive CC-NC-SA license: https://github.com/Vladar4/itdr

From personal experience, the biggest struggle is non-rectangular text wrapping around images.

Having said that, have a look at this non-Context template, too, which is quite impressive in showing that you can't really automatically tell that it's done by LaTeX: https://github.com/ludus-leonis/nipajin