Earth Defense Force 2017 Portable review. Classic Game Room presents a CGR Undertow review of Earth Defense Force 2017 Portable for Playstation Vita developed by Sandlot and published by D3 Publisher. Earth Defense Force 2017 Portable gives the player the ability to be a member of the EDF when the alien invasion happens to Earth. You pick up your weapons and head out to fight them off one alien bug at a time. The game offers big open environments that are completely destructible. And while the action may be limited, it is entertaining to shoot your way through the endless hordes of aliens. Plus, the Vita now offers multiplayer, that makes the action even more enjoyable by giving you the chance to play it with a friend. This video review features video gameplay footage of Earth Defense Force 2017 Portable for Playstation Vita and audio commentary from Classic Game Room's Ryan.