DO NOT SPEND ANY MONEY

First off, "customer service" blames you when the game freezes or kicks you out during a battle. They make things up to shut you up and wont respond if you reply intelligently. I offered to give them logs but they wont accept them and say its your fault, again.
Second, the matching is horrific at best. Expect to play players that spends hundreds or thousands. They lose on purpose to go down arenas and own you. Kinda hard to enjoy when someone with level 11+ cars are playing you in arena 7 and towers are two levels higher.
Third, the drop rates are terrible, unless you spend.
Fourth, the concept is good but since theyve grown, their focus on "fun" is going out the window. This kind of combines with match making as you WILL get put up against people that have a far better deck (funny how I went up against 3 of the same decks then I switch, they change my player a couple round then I go back and go up against same deck as original. This cant be coincidence).

Its a fun game but you must spend to compete after arena 6 or so. You can play for free but itll take you quite awhile to gather enough cards and more importantly, gold to upgrade. I havent spent much and wont spend anymore. Playing against players that lose players on purpose to tear apart smalls is ridiculous. You shouldnt play anyone more than a level above you unless you go on like a 20 game win streak. Sadly, they wont respond to my inquiries on how matching is done so its more than likely just whoever is on with no algorithm. Again, fun game but MUST spend to really do much. Youll go on some pretty bad streaks but dont change decks, youll get another that counters yours perfectly. Ive tested many different things and they find a way to screw you especially the tournaments. Not much you can do if everything youre dealt (even ones you choose) die from one arrow..........play at your own risk and dont be mad when they fawk you over and over.....

Orawhaty about Clash Royale, v1.8.1