You should check the roadmap, but to be clear: the game will be about 80% free. Chapter 1 is on my Patreon, and later, once I finish Chapter 2 on Patreon, I’ll release Chapter 1 for free on itch.io. Then, when Chapter 4 comes out on Patreon, Chapter 2 will also become free on itch.io.
I’m not sure yet if it will be available on Steam in the mods section, I haven’t checked, but I’ll try to add it to the in-game mod download section provided by the developers themselves and see if that’s possible once Chapter 1 is released (not the demo).
Almost everything will eventually be free, it will just take time. Supporting the project on Patreon lets fans access content earlier and helps me continue developing the mod, which gives the game a second life. Like many games, mods help them last longer, so I think it’s fair to make all content free eventually while giving supporters a chance to enjoy it early and support the creator financially.