Sadly the game play is not randomized challange. It is algorithmic set for players group. It doesn't matter how much time/effort you build your card, it is set arithmetic calculation so you challange someone who is definely will beat your cards every challange you go for, very frustrating and unfair. The game play/challange suppose to be randomize not suppose to be algorithmically set challange!!The rating is dropping down coz it's not fun gameplay anymore instead they place rock on ppl's head!