It's not a actual game, yet. It's still under development. They do release two demo version. The free version on Steam, which offers a decent amount. And the Patreon version, which offers a little more. Is it worth the 10 bucks for the current Patreon version? I think so. I wouldn't fork out cash every month. Maybe when the game actually gets finished. and if there is mod support, then maybe then it will deserve a mod section.
Whether you the Steam, or Patreon version, the one thing we can share is, gameplay saves, saves that include any edits you've done, and you can even share any saved presets.