We all know that there is no such thing as a genuine free-to-play game. But World of Tanks takes PAY-TO-WIN concept to such shameless levels that it should be illegal. It doesn't only screw its non-paying gamers but it also betrays the paying customers too. Imagine you paid 100 dollars to a tank and in 2 months that tank becomes obsolete because they release another tank which is way Superior than yours and meant to compete at the same tier.
And there are many other sinister things going on with this game, I cannot possibly fit them in a single review with a 1000-word limit. The buyout system in game is set to gold, which means spending real money, and it is designed to trick you to spend real money on stuff that you don't really want to buy with real money. This trick works when you have some gold in your account that you purchased with real money with other use in your mind.
As I said, there are way too many things to cover. I won't go through all of them, but if you don't take my word for it, take a look at the videos on World of Tanks' Youtube channel, read the comments. This is a warning to all of you people out there. Do not spend any money nor time for this game. Because the game is complicated, it might take you a lot of time and money before you finally realize how broken it is and how it's designed to make money in an almost criminal way. This game got worse over time because of the company's greed. It has such a broken balance in gameplay to the point of being not fun any more even when you don't think about money.
If you are a mindless, spoiled brat with your father's credit card you might find this game somewhat fun for a short time. Because there will be no challenge for you in the game. For the rest of the players, that corresponds to a 99%, there is only frustration for you after you go through your initial excitement with the game.