It's not difficult to learn not to start walking when you're in VR. I've seen some people lean left and right when they play an FPS for the first few times, but

It's not difficult to learn not to start walking when you're in VR. I've seen some people lean left and right when they play an FPS for the first few times, but they get used to it. VR with a simple controller though is just not good enough. You'll need arm/hand tracking and probably a gun controller for shooters. If you can track 6 degrees of freedom of the gun controller and 6 DOF of the head, then you have your first immersive VR right there.