FLAMBERGE is a diamond in the rough, albiet an incomplete one. The mechanics are unique, interesting, and well-implemented, and the gameplay is super fun. From my experience with the game so far, this game does NOT feel buggy, unpolished, or poorly balanced, so keep in mind that when the developer warns that this game is still in development, they are probably referring to the fact that the latter half of the game's chapters have not been finished yet. What is currently playable, though, is really solid, so don't expect the game to feel unfinished in terms of functionality or gameplay. Is it worth $10 in its current state? Ehhh... I'm on the fence, but leaning a little towards the "no" side of things. In the future, once work on the game has been completed and all the content is there, would it be worth $10? I'd say YES! Definitely! If you, like myself, got this game as a part of a bundle such as the Bundle for Racial Justice and Equality, I would highly recommend giving FLAMBERGE a try! You won't regret it!
(Fun Fact: The word 'flamberge' refers to a 'flame-bladed sword', which is a kind of sword that has a blade with a wavy shape, rather than the straight blade that we usually associate with swords.)