It's out, btw.

(Monster necro, haha)
Released on 29th of November on GOG, Steam, Humble Store.
Reviewers seem to really like it:
RockPaperShotgun,
Destructoid,
Eurogamer
My personal experience: It's lovely

I am having a great time with the campaign scenarios. It is very pretty for the player, but the guests always need some convincing through well made decorations.
The steam workshop works great with the game. You can share blueprints of rides, or just decorations and nearly instantaneously use them ingame after subscribing.
The music is great, as well, with cool sound effects.
My only complaint right now is a bit in the user interface area. I think whilst the system for most decorations and scenery objects is fine, there could be some improvements made. I might try to sketch an alternative idea to the 'standard' lists of objects myself and see how that will sit with the devs. The devs are also very responsive to issues brought up on the subreddit, discord and steam forums.
Therefore, I can only recommend it
