It has been hard to pull myself away, but I got work and real life responsibilities. Typing this out on my phone at work ATM.
The first party content is quite impressive visually, but lacks a bit in the fun area on everything I tried. Pretty VR games, but not fun VR games. If you want VR eye candy then lots they have to offer will impress. Eve Valkyrie made me feel a bit weird doing loops and stuff at first, but I'm one of the lucky people that aren't effected badly if at all with motion sickness.
I personally have been using vorpx to play skyrim and borderlands in 3D and it's amazing as hell even though they weren't meant to be played like that. Between a fun nonVR game in VR and a nonfun VR game, I'm hands down choosing fun nonVR. Also virtual desktop to make a 10ft tall computer monitor in a virtual environment. Playing hearthstone and watching YouTube and movies as weird as it sounds is what I'm enjoying the most with it.
Unlike 3D movies that do take away from the experience, and not to mention the obvious 3D plug scenes (shameless 3D) playing like borderlands in 3D actually greatly enhances the experience. I can see the woolymogs throwing rocks, accurately gauge their distance in the air and dodge them correctly, see the bats flying overhead, lead their trajectory and shoot them very effectively. When being shot at, naturally tell where from and seek appropriate cover. Things you would do in real life, but found a disconnect in that concept when playing in 2D flat screen. Situational awareness is another natural concept in the real world that translates well so far in VR, but you have to think about where things are when playing in 2D.
The problem with describing VR to someone who hasn't used VR is a frame of reference. I'm colorblind, how do I describe to you what I see to a non colorblind person? How do you describe what you see to me, or a blind from birth person? Describe a what a primary color looks like. You can't because we have different frames of reference. Imagine your view of the world if seen through a CRT monitor (pixelization). Imagine if the world around you was the video game you are playing, that's VR.
I can't wait till the touch controllers come out and a game that allows you to not have your aim to interact not tied to your gaze (like reality) will make things even better I feel.
Get a google cardboard, imagine the view to be about 10 or so degrees bigger all around, image sharper, less pixelization, less pixel grid (screen door), give it 6 degrees of freedom movement, make it buttery smooth, and actually comfortable to wear and you got a rift.
Unity and unreal have oculus rift support. I don't know about id tech.