Nintendo announced an unexpected entry in the Metroid series during its Digital Event today. “Metroid Prime: Federation Force” is in the works for 3DS, the company revealed. #Metroid Prime: Federation Force from Next Level Games is a 4 player mission based game. #NintendoE3 pic.twitter.com/24PDdjbAts — Nintendo of America (@NintendoAmerica) June 16, 2015 #Metroid Prime: Blast Ball sees teams of three...