Guitar Hero meets Star Wars Rave Party.
The first game that will make you want Virtual Reality.
Gameplay Video
When I first discovered Beat Saber I was instantly blown away. Who hasn't always dreamed of wielding a lightsaber? I know I have. Combine that with some awesome music, a game that has a very large skill range, and you have Beat Saber.
I do not even own a VR headset yet, I have only used one just once. A roller coaster at Six Flags in Atlanta, GA had a VR option. I tried it but was not a fan at the time. I think they just had a cheap headset and a bad concept overall.
Games like Beat Saber are what make me consider buying my own VR headset. This game is available for $20 on Oculus and Steam (the gaming platform). You can find download links for both here : http://www.beatsaber.com/