I but the bullet and paid for the ad free version which immediately improved the gameplay for a short while. They give you tickets to buy more resources if you don't feel like grinding. The issue I have now is they implemented a token system which requires you to perform 9 Grundy tasks each day to obtain 18 tokens to progress. The door I'm on now requires 72 tokens, which is 4 days to progress. It feels like they are attempting to artificially inflate the length of the game.