It's a fun game to play. Unfortunately, like most mobile games, it's a pay to play game... eventually. It's more complicated then that though. You are match played so no matter what cool up grade you get, you will just be matched with a similar opponent. Get too many wins in a row? You get match with a super good player so you just lose. After a few programed losses, the "would you like to buy this to get better" message appears. Was really fun until about series 6 when you realize the ruse.