The fantasy table top roleplaying game Tierras Quebradas counts with an interesting amount of free digital supplements. Now they are all available in itch.io! Tierras Quebradas is a fantasy RPG of Moorcockian inspiration published in Spanish by Ediciones T&T.  

You can find the Tierras Quebradas' Starting Guide: https://carlostq.itch.io/gua-de-inicio-de-tierras-quebradas

And the five numbers so far of the fanzine Intervención Divina.

1- https://carlostq.itch.io/intervencin-divina-01

2- https://carlostq.itch.io/intervencin-divina-02

3- https://carlostq.itch.io/intervencin-divina-03

4-https://carlostq.itch.io/intervencin-divina-04

5-https://carlostq.itch.io/intervencin-divina-05