Two really encouraging stories on brain control: Neurovigil's EEG iBrain research with Stephen Hawkings and fMRI typing.
Presently, communicating and playing games with brain technology that doesn't require surgery is far from easy. Something portable, fast and switch like in power has been elusive too. Maybe one-switch games will become an essential training tool for people with locked in syndrome. Maybe things are going to get better sooner rather than later.
Thanks to Techni Myoko for the fMRI typing link.