UPDATE: THE GAME IS RIGGED. I bought all of upgrades in the game had 3 stars for every level except paris level. Now I cant even beat previous levels. Spent a hundred dollars on all the upgrades in the game and even had to use the expensive bonuses at the beginning of each stage for the last world stage and its subsequent levels and after beating the game I can say firmly that the developers cheat and theres no way to beat the game at all without using 400 gems to restore being beaten in the end