This is definitely the game I spent the most time with. My brother and I worked together to defeat the first 2 dragons (each 1 took 2 tries) across 3+ hours. We didn’t fight the black dragon because it was getting late and it looked really hard to make the structure. When we get time though, I do want to try to fight the black dragon.
I like the emergent mechanics and the puzzle of figuring out how to build the structures. Usually I think information about a game should be inside the game, but in this case it feels like it fits well outside of the game, as if the player character already knows exactly what they need to do. The game does put a lot of faith in the player to figure out the puzzle though, which may scare some people away.
One of the tags is “Singleplayer-focused”, but as far as I can tell the game works well in multiplayer too, and I can’t think of a reason why it would be more fun single player than multiplayer co-op. I would recommend playing this game with friends, because working together makes the fights easier. But, if you can only play single player, then I would still recommend the game (set aside lots of time though!).
I put "Singleplayer-focused" mainly because I thought it would be strange to play this on a server with random people.
I forgot that you could also play this on "LAN" or similar. Thanks for mentioning that.
Perhaps there will be more multiplayer support in the future :-)