A very clean implementation and a great use of the theme! The upgrades systems add a lot. Very fun and addictive, and the fact that you need to collect the blocks adds a lot! nice job!
Indeed, the upgrades system really extends the lifetime of the game and the inventory system for blocks adds more depths than if you had infinite blocks. We'll try to extend it later to see what we can come up with to make it more fun! 👏
