My dad used to play video games back in the atari 2600 days, and he would play Sega Master System games with me, but as games got more than 2 buttons he sort of fell off and found them too difficult to try. Put a modern Xbox controller in his hand and he is completely lost - analog sticks in general make no sense to him. It was in this context that, about a year ago, I invited him over to my house and let him try Elite Dangerous with my HOTAS rig. He put on the headset and played a bit, and when he took off the headset he thought he had been playing for like 10 minutes when he'd really played for 45.
Well, today I invited him over to try the HTC Vive. The controls were immediately understandable to him, even the concept of teleporting. He played many games, including hover junkers and his favorite, Budget Cuts. He was absolutely enthralled by what he played. When it was all said and done, he thought he had played for maybe 30 or so minutes, when he actually wound up playing 4 and a half hours non-stop. This is the longest video game session my dad has ever done, period. He was shocked he played for that long.
VR is fucking magic. This saturday, I'm bringing a bunch of family over for a BBQ and letting them try this. I can't wait to see my mom and niece and nephews try this.