Earth Defense Force 2017 Portable is available now on the PlayStation Vita via the PlayStation Store. If you're not familiar with the series, I'll sum it up for you: You play as Storm 1, part of the Earth Defense Force. You forcibly defend the Earth from alien attacks. These aliens, called Ravagers, come in the form of giant bugs, hulking robots and menacing drop ships. You control a little dude with strangely animated hips and blast the bugs while gathering better weapons and armor. As an added bonus, the buildings which make up the cities you're supposed to be defending will crumble if you so much as look at them funny. There is no penalty for knocking over a skyscraper for the sake of a good explosion. It's simple, fun, and addictive.