Ive been playing the game for years now. Very unique and fun card game. Like most moble card games you need to put in the time if your not spending money to collect the cards you want. I have spent little to no money and have just about everything I want. That said the system is very fair. Just do your missions and weekly challenges and you can earn a healthy amount of free packs. The crafting system is also very fair for this genre of game.