So I've tried the VR set this week-end! I called over my brother and sister to try as well
It's difficult to describe, and I did not fully believe it at first, but it's indeed a completely new way to experience a game. My brother couldn't see anything special at first, looking me play through the monitor, then I let him play and he completely changed his mind. And it was such a simple thing, just flying the little robot inside The Lab.
Anyway, I did get a bit nauseous the first time I tried it. Maybe it wasn't such a great idea to start with the mini-game on the mountain, but it went much better later on, after getting used to the "teleportation".
I still need to learn to properly move my head around to where I want to focus on, instead of just moving my eyes. That will take some time I guess
I tried almost every minigame in The Lab, my favourites being the Archery one and the Aperture Robot Repair. The Archery mini-game is simple and yet so much fun (both my sister and my brother loved it as well). The Robot Repair is just an amazing experience.
My hype for HL Alyx increased a lot during this week-end and now I can't wait to try some proper games