I wish the sell window would close as I click on the shop and the other way around. Also some prices seem a bit steep for what you get but still very fun game :D
Thanks for the feedback, if you're talking about the upgrades that are the 5 base ones but bigger, it's because they're not meant to be worth it instantly, I wanted the base upgrades to be more worth it for a while, then the 10x ones for a while, then the 100x ones for a while etc.
