If you don't want to spend money avoid this game. The most greedy game I have seen on Google Play. Without spending at least 200Eur per month forgot any results. The game take care only fo highest level players. Begginers can play against experts since developers allows that. Instead player level to be criterium for duels they use trophies. This can be easily hacked.Highest level players purposely downgrade they trophies and play against week players i.e. beginners. Avoid game!!!