Yeah so it definitely forces you buy more gems to progress unless you get lucky AF with some of your hits. Spells are great but cost money to buy, try to beat levels without them first (yes you get some free, you can only use them where they let you) If you select them for a match USE THEM, if you DON'T use them you LOSE THEM. Fun game but riddled with micro transactions. The game needs a shuffle ability through each game mode imo.