Again video from GDC and this time round is the Earth Defense Force: Insect Armageddon, the new title of the series Earth Defense Force. The three new video tell us about the new cooperative mode that will surround the main story mode, including a new "Survival", a set of 300 weapons, 4 different weaves and other new surprises.

Insect Armageddon - GDC 11: Core Elements Walkthrough | HD version
Insect Armageddon - GDC 11: Co-Op Preview Trailer | HD version
Insect Armageddon - GDC 11: Survival Mode Trailer | HD version