While we've already seen Sony's PlayStation Move in action, the biggest selling point for this motion-sensing device is that the PlayStation Eye, which is a component in the overall Move setup, is already available. For gamers who own the device, they can simply purchase the Move controller and be up and running in minutes.
But for those who don't already own the console camera, a costlier package will be required for the Move experience. This includes the Eye, the Move, and a compatible game.
With all of that aside, the Move is a must-have simply because it pulls PlayStation 3 owners off the couch. It looks to be on par with Nintendo's offering, requiring users to actually hold a device in their hand, unlike Microsoft's Kinect, which doesn't require a controller.
While some of the demos shown at E3 2010 looked impressive and rather fun, we're anxious to see more of what developers can offer in terms of design and content. As it stands now, the device may have to take a backseat to the PlayStation 3's other big feature, stereoscopic 3D support.