SANTA MONICA, Calif., July 15, 2009 /PRNewswire-FirstCall via COMTEX News Network/ — Activision Publishing, Inc. (Nasdaq: ATVI) and Pro vs. GI Joe announced today a new partnership to host the “Activision Showdown,” a series of video game competitions bringing together active duty troops with some of the world’s most popular professional athletes for a once-in-a-lifetime [...]