Oculus Rift DK2: Proton Pulse
From ZeroTransform, the developers of Vanguard V, Proton Pulse is a first-person Breakout-like game developed specifically for virtual reality, and it's some of the most fun I've had with the Oculus Rift yet.
Here are my impressions I wrote on NeoGAF:
I finally checked out ZeroTransform's Proton Pulse. The developer made an updated version of it and released it as a way to help advertise their Vanguard V Kickstarter, which didn't meet its goal. The best way to describe it is it's a first-person VR version of Breakout. You control the paddle with your head movement to bounce the ball back to destroy the bricks. You also get power-ups like lasers to help you out. It took me about 20 minutes to play through the whole thing. It has a great soundtrack and I'm looking forward to the full version of the game. Proton Pulse is a good showcase of taking a familiar concept like a Breakout clone and designing it specifically for VR. It's simple, but I was engaged the entire time.
I just checked out the Vanguard V site and the link to the latest version of Proton Pulse isn't available right now. It seems they are now raising funds via other means for Vanguard V.