First off, love the occult vibe. The eerie background and otherworldly whispers sell the premise that I'm dabbling in some unholy powers. Things were rendering a bit dim on my monitor, and so I thought the skeleton outline was supposed to be a glowing demonic sigil of some sort until I popped back to the game page and saw what it was a bit more clearly. It didn't impede gameplay at all, so no biggie.
Gameplay had fantastic "risk it for the biscuit" mechanics. I stumbled around for a few turns before starting to intuit the impact of various roll and purchase choices. At first I had wondered why I would bother going for a dice with only skulls and rerolls. Playing a bit longer answers that question: rolling from your bag does not expend rerolls and you are likely to need to stockpile them in order to hit three crowns. The reroll bank, as a whole, adds a lot here. You really need to question whether you are going to start burning rerolls to try to push your skull count down and make a safety buffer for your next roll or whether you should just call the round a wash and save them for next time. After getting burned in some of the early turns, I pretty much avoided risking a third skull whenever I was given the choice. I did end up purchasing a dice pair at one point and rolling straight into a bust, which was kind of funny. Seemed perfectly in line with the lawful evil vibes of the soul-gambling skele-demon.
Very fun! The mechanics all fit together harmoniously.