Lol, it has absolutely nothing to do with Overrun, it's much more like an unexpected mix between Monster Hunter ( big living world with intelligent wildlife, weather cycle(and maybe day/night) and a big evolving prey/boss to hunt) , and alien vs predator( a prey evolving by killing animals to become the hunter) and left 4 dead ( the two gameplay sides, with 2 different level design for the hunters and the beast) in an original universe, absolutely no game looks like that in any way. That's why it's totally fresh.
When, like an other guy said, mecha are just cool vehicles, the only good innovation is COD with Jetpack.
But there is so much COD-like games, so it's good to have something really fresh from time to time.
Predictions for end of 2014 HW sales:
PS4: 17m XB1: 10m WiiU: 10m Vita: 10m
