This is really good! It took me a little while to get the hang of the mechanics and also the fact that I was choosing which room to go to or which treasure I wanted but once I got the hang of it, figuring out the fights was super fun. You have a lot of interesting mechanics and I can see some of that roguelike decision making as I build my ~deck~ er, ballstack, like whether I can handle multiple enemies or one big enemy, etc. Great work.