We've seen plenty of Oculus Rift mods over the past year that attempt to breath new life into retro Nintendo games. Some have been a tad peculiar, while examples such as Metroid Prime suited the virtual reality technology particularly well.
Running a Super Mario 64 mod through the VR headset isn't new, but YouTuber Chris Zaharia is trying to achieve a fully immersive experience by incorporating a motion controller into each hand to simulate Mario's punches. The end result is a rather stilted, slightly peculiar game in which Mario's arms stretch in front of him in an unnatural way; for a fan effort it's relatively impressive, of course.
This'll never replace the standard experience, not by a long shot, but it's a good example of what fans can achieve when they put their minds to experiments like these. Check it out and let us know what you think.