Thankyou for all the feedbacks! We already solved many problems you listed here in the final version. There will be 5 more levels, the shop has been fixed. The blocks are more stable and there will be more blocks to stack. (Thankyou for the small notice of the comandments, that was a thing we didn't noticed!). Also, happy to see this type of critiques, always really useful!
P.S. About the jam theme, i think it's perfectly on topic. Built to scale means a game where you can have more and more things to use, buy, upgrade exc. Arcade mode is just that.