Co-Optimus Feed for Co-Op videogame news for .U.N. Defense Force: Earth Joker A custom RSS feed on co-op gaming for: Co-Op videogame news for .U.N. Defense Force: Earth Joker http://www.co-optimus.com en-us http://www.co-optimus.com/images/cooplogo.pngCo-Optimushttp://www.co-optimus.com