Interesting, it looks like a more "technicized "version of mind control with some potential for hacking ( hijacking) ;D as the internet medium is used. It would be interesting how would it be working if the receiver could see the game instead of being "blind". Would he have any conflicting thoughts? If I understand this correctly this is about pure motoric stimulation and the receiver is like a puppet, so it could be really weird wanting to do one thing and acting differently! Don't we have sometimes this bizarre experience with no reason? Having options to chose from, being undecided and then quickly choosing "randomly" with immediate feeling this was not what we wanted?
From the other side we know the stories ( really old!) of people having chip implants ( for other reasons than medical, rehabilitation) which control their all behaviour not only single motoric functions.