The game is great but to progress you have to play the arena and the arena is total trash. In the lowest level of the arena facing opponents with more than 10x the team power, opponents who are level 80 when I'm 10 on my second day playing and teams of 4 fully ranked and ascended legendary champions. Zero hope of progression, will have to play for years or be super lucky or pay loads of money (and still need luck) to be able to get to gold IV and that's not even half way through the missions...