Hi, my name is Trent, I've used itch.io for a long time first making indie games and now as a platform to distribute suppliments for Pen and Paper RPGs (Like Dungeons and Dragons and Wargaming (like Warhammer).
I've used itch.io because its the absolute best platform for the job, its non-intrusive, is simple to navigate, and easy to download from. It includes pay-what-you-want options and users can follow me for updates.
There are services avalible like drivethrurpg dedicated to this but they require you to go through a slow check out for products and take a fixed 30% commission on sales. Itch.io is the best platform I've ever used for distribution.
I'd love a category section for Pen + Paper stuff and Wargaming, so users can find similar stuff and it might encourage other like minded individuals to use the platform too.
Thanks for your consideration.
Trent