What are Keys?

Are you finding yourself locked out of more levels? Retread old ground to learn the Art of Shopkeeping in Potion Punch 2+:

🗝 The Keys to the Future

Keys are a resource that’s sometimes needed to unlock the next level and progress the story in a shop. You get these by finishing more levels marked by a key icon on the levels screen. There's nothing wrong with going back to practice before heading on!