Here's what's wrong with Ninja Warz. Read with caution.
When it comes to making money off a game through in-game content, there are two approaches. Fun but harmless things like cosmetics or customization/tweaks that don't actually change your advantage, and then...this.
"Pay to win." Want the basic leveling currency? Well you can buy it with real money! How about some good weapons? Give us some cash! Want a high-ranking ninja? Fork over some dough! It goes on and on. Really, the designer more or less sold his true gamer soul with such things.
Also, and there are a couple of really annoying glitches. Like how some are unable to properly add friends. I have two listed, but can't add any more, even after a month of waiting. Yet they have me added on their end and my side is somehow busted. I'd fix that, devs. Not that you actually care about your fans.