Pacific Rim

In this game, you are a Jaeger (the robot) pilot (or a set if you've seen the movie) who must defend the world from Kajui (the monsters). You use the Gipsy* Danger in the tutorial, but you start with the Coyote Tango. After 2-3 fights you have enough money to buy the Brawler Yukon or something cheaper. One fault is that the Crimson Typhoon only has 2 arms. But if you look at it logically, each pilot moves his or her right arm to move the Jaeger's right arm, so adding a 3rd pilot doesn't do anything. There are in app purchases. It is free. Its rated 9 and up.
JB's rating:OUTSTANDING!!

*this is how they spell it in the movie!