Okay, this one really surprised me. I didn't think you could make throwing dice fun, but you did! The upgrades got me hooked and I liked watching the dice wobble and glow when I got them right.
Sometimes the dice snapped to the ground or looked like they're being pushed artificially, which made it feel like it's rigged. I don't know if it's a bug or an unintended side-effect?
Also I didn't understand which actions prompt the upgrades and I wish there was more variation to them. I would have continued playing for those :)
Good work on this, it's creative :)