2 stars because of the nice graphics but very ad laden, repetative game play, offering limited progress unless you pay through the nose for upgrades gems and potions, and the prices they ask are silly money. Business 101 - if you reduce your prices you will likely sell more. Why spend £15.99 to remove ads then pay even more for limited upgrades. They even want you to pay extra to help you progress through so called special events. I pity the poor saps that are spending a fortune to progress.