In case this trailer doesn't show you within five seconds, here it is from the developers themselves: "We were primarily inspired by Rust & Chivalry in the development of this game".
But that's OK! Because if you're going to rip two games off and make something new out of the stolen parts, you can do a lot worse than a game where you build castles, smash other castles down then run around madly stabbing at people.
Chivalry was pretty fun for that, and it didn't even have the blow-up-the-buildings part.
This game's called Reign of Kings, and while there's a bigger game being promised (with inter-connected taxes, power struggles, etc), I'm just keen to try out a little castle-smashing.
It's "coming soon" to Steam Early Access.