Well lets see.Two things that have already been invented today.
1. a ball people can walk around in,while playing games,so that it seems more realistic. 2.A vest that makes you feel when you get shot.
They also have a holographic keyboard for the black berry out that looks like a pen.This type of technology could all be implemented into games,and before you know it.Games will feel so real that people will lose their minds,and forget what is real and what is fake....it could happen.
I think that would be wicked. Because then as you were paying you would like for or something, or be stop firing because you are actually felling pain. That would make you more vulnerable. That would make games SO much more realistic, i love the idea.