Sega VR

Back in 1991 the Sega VR was announced as an add-on for Sega Genesis. Only one prototype was made and it was shown at a computer show in 1993. There are two different reasons why it was never released but I don't know what the real reason is. According to Sega the game testers kept injuring themselves by bumping into things. According to other people the testers got headaches and motion sickness. It is also said they were developing something like this for Sega Saturn but to this day it has never been seen and probably never will be.