"There's room for innovation here, but moving that controller around — it's something that's not mainstream for most games," he said. He recalled a Microsoft-made controller from several years ago that allowed 3-D movement. "It's tough because sometimes you move the controller, and you don't [mean] to fly into the ground. You just want to put the controller down," he said. "People aren't that good at totally standing still. Even pilots actually sit in a chair when they do their flying. So there's a lot to be learned about these controllers."