The 80's childs are familiar with virtual reality term. we seen this subject in the action at johnny mnemonic, the lawnmowerman etc.

 if you're not living in a cave, probably should know the oculus rift. it was a kickstarter campaign about a simple vr helmet (hmd) project and also succeeded. its currently in development stage. price is 300$ but you need at least ~650$ including shipment, customs etc. if you're staying in europe.

 Today, i experienced it about five minutes in somewhere and decided to write first impressions which memories are still fresh.
 

 Pros
 - It can provide exact virtual room feeling with built-in gyros. your brain will adopt new visual input source in few seconds.
 - Completely plug & play. no detailed configuration needed.
 - Image quality not good for still pictures but enough for a fps simulation.
 - Good price.
 

 Cons
 - You can clearly see pixels, that's annoying.
 - User can only see 60 percent area of 21cm (4 inch) screen from 3-4cm distance. rest of screen area wasted.
 - built from cheap plastic, not designed for long life usage.
 - lenses are easily vaporizing by your own breath and blocking vision after few minutes later.
 - I know its development version but still too big for human head..
 - All games should render two copies of scene in splitscreen. that means high usage of system resources.
 - Causes headache and dizziness in 3d sbs games after 10 minutes of gameplay.
 - Material is not hygienic, probably it will cause bacterial infections in long-term use.
 

 actually its a stereoscopic viewer with aspheric lenses. all trick turning around splitscreen special games and third party extensions such as tridef. if interested with its technical part, this guy was created a exact clone of oculus and shared details on his blog