What happens when you cross Being John Malkovich with NES classic The Legend of Zelda? You get the terrifying Oculus Rift demo seen in video below the break. The mod is currently just the game's overworld and its first dungeon, but there are plans to scale up the whole game to VR playability by March of this year (yes, for free -- this is Nintendo's property, after all). Should you already have an Oculus headset and a strong constitution, the demo's available right here.
Oculus VR Rift (development kit)