I enjoyed placing the blocks. That part felt good. Capsule art looks great.
Although you're working the jam theme into this game's design, I don't think the dice rolling adds anything of value to the experience. It's just an extra step getting in the way of placing the Jenga blocks. The block placing and making sure the tower doesn't fall over is the fun and interesting part, and the design should lean into that.
If you want to keep building on this concept, I would suggest taking out the dice roll step. It's superfluous. Maybe even take out the special blocks and just make a very fun tower building / stacking game. Then add in the extra layers back to give the game a bit more depth/variety.