Which hammer upgrade did the "smash falling gems" mission unlock? It seemed like nothing happened after I finished the mission. Additionally, there's a hammer upgrade that has something to do with Ads, but there's nowhere to watch them
It unlocks common gems, with all the price decreases it's 3e24 in the hammer shop, might not be visible yet if you have under 3e21 hammers.
The ad upgrade is for mobile only and it's an oversight that it's on itch. It'll be removed.