This game has potential to be a good title but the developers are so greedy for this to happen. In the first 15 days of playing you will feel that the game is playable without paying a cent, but when you progress especially after clearing the normal difficulty of the story the game become unplayable for an f2p player. You get free character but you need a lot of gold to upgrade them which is the biggest problem (if you play 10 hours a day you won't get enough gold to upgrade a 1 star item)