I have 1700 hours in the pc version of this game with 80$ spent so far on in-game items because its my favorite game and I can say that they did a good job implementing the game for mobile ignoring some limitations. I think it is a 5 star game, but the best rating I can give is 2 because literally everything in this version is behind a pay/grind wall to the point at which the game is with no doubts pay to win (part limit and energy limit can only be increased with real money + exclusive weapons