This could make it difficult for EA to successfully develop the same version of Medal of Honor for both Windows 8 and Windows Phone 8.

FORBES: Will Windows 8 Help Electronic Arts Get Back On Track?

While Activision has raised its full-year forecast promising a "record-setting" year, EA has had to lower its outlook for the current period blaming its latest Medal of Honor and NBA Basketball games for having "disappointed" and its Star Wars: The Old Republic role-playing title for having "underperformed".

BBC: World of Warcraft pandas help boost Activision profits

Since these lawsuits, a war of words have been volleyed between Activision and EA. The two giant game makers butted heads last fall with Call of Duty: Black Ops and Medal of Honor going head-to-head at retail.

FORBES: Connect