They came out with weapons and new characters that were way over powered then, later in updates would cut them down. It's honestly a garbage game. I will not buy number 5. Too many micro-transactions. New gun comes out that people pay for. Kills, totally dominates the game. Later in update gets cut down and doesn't do nearly as good. Look at the dog for example. Was a great special got 5 kills minimum. Now your lucky to get one. Not to mentions the software they came up with that matches players that buy their products/in game transactions (and are really good) with those that don't to encourage them to buy their in game transactions. Seriously it's a software they have/are working on getting patent on. Don't buy the game. Don't give them your money.