Vanguard V
This is super awesome. I've played this on the Rift and it's a fairly simple rail shooter. You look where you want to go and lock onto and fire at enemies by looking at them, there is no need for a controller of any kind and everything in game can be done using the rift itself. The 2D demo lets you use the mouse to steer and look about instead. It's not especially difficult but it's intuitive and seriously fun.
It's a VR game being developed for the Oculus Rift and it's amazing. There is a downloadable demo on the Kickstarter page [access requires a $1 pledge, but even the very short bit of the game is worth that much], and you can try it out in 2D using a mouse to control the game if you don't have a DK2. It's a separate download from the OR version, but it's also easily found on the main page. The game is totally worth checking out, and it's got a long way to go to get funded.
It totally deserves it though. I'll be sad if this doesn't make it's goal. This is the most polished VR software I've seen yet. The demo feels like it could be a level in a completed game, it's got a great soundtrack [you can listen to the main theme song and download it on the KS page], and the VA isn't bad either. It does cut off just before the first boss, after all it is a kickstarter demo, but the entirety of the first level appears to be there to try out otherwise.
Seriously, if you've got any interest in the Oculus Rift or Sony's VR project, check this out and seriously consider funding it. The plan is to have it out at launch for every VR platform. This is the kind of game a new platform needs to help get it off the ground and I'm really hoping it will get funded and be available.
If you want to see what it's about there's a few videos on the site that show gameplay. The one at the top is the best as the others are both Oculus videos with the two round images side by side. There's a short pitch about the project, but if you want to skip it to check out the game [and the awesome theme song] gameplay starts at 2:09.
If you have any interest in VR in the future, for the love of God fund this. If nothing else visit the page and nab the free song while it's available, it's worth a listen at least.
Here's an image from the site, the still doesn't do it justice and it looks much better in motion.
His other game "Proton Pulse" is also pretty awesome, it's kind of like a 3D breakout where you control the paddle by moving it where you look. It's much simpler than this, and already fully funded as I understand it.