Artifex Mundi often provides the "first hour" or a substantial intro of their games for free on various platforms to let players test the quality before committing to a full version.
: Most Artifex Mundi games on the Steam Store have downloadable demos that cover the first 30–60 minutes of gameplay. Official Free-to-Play RPGs
If you have an Amazon Prime subscription, check the Prime Gaming loot page monthly. Artifex Mundi games are regular fixtures in their free PC game lineups, giving you permanent ownership via the Amazon Games App.