I really loved the design of your game!
While it felt a bit slow every now and again, I always felt a rush of dopamine whenever I upgraded something! A fast forward button would be really nice to have if you plan on adding anything more to this!
I especially enjoyed the music in your game! It always kept me bobbing my head up and down as I played! Hahaha
Whether you continue with this concept or not, I'll be keeping an eye out for any future projects! Thank you for making this game!