I love the aesthetics! The thumbnail alone got me to check this out, and I had fun playing.
I was a bit confused on what to click on at first, and didn't realize the crystal ball thing was interactable.
Also, do the different skeletons do functionally different things? I couldn't really see a reason to pick one over another except one is newer. I'd have loved to see the impact each type is having, maybe damage numbers or different colors on the health bar.
Either way, good job on the game!