While nothing about Kotick's comments seemed to indicate that a Call of Duty MMO was actually in development, it's still an interesting prospect to think about. Call of Duty 4, which is currently the most actively played game on Xbox Live, actually contains a number of gameplay elements reminiscent of an online RPG. There are classes, various skills and challenges to grind, and a persistent experience gain. It really wouldn't be much of a stretch to imagine Call of Duty in an MMO context, or at the very least, containing even more elements from the genre to grab players and keep them coming back. But the very prospect of a collaboration between Infinity Ward and Blizzard is almost simply too much for my geek brain to handle, so for my sanity I'm just going to have to assume this was all executive-speak, and such a game will never happen.