I rewrote this post from the future about GDC’s Experimental GamePlay Session
Just watch it. Seriously, I cannot explain it any better. If your mind remains unmelted after viewing there is much more about Achron here and here, not to mention 3 more videos on YouTube. Achron is just one of the concepts shown at GDC’s Experimental Gameplay Session which you can read even more about at Gamasutra. Between this and Lionhead’s The Room I have no doubt that future generations will develop psychokinetic powers at the hands of these games. Me, I’ll be lucky if I can make it through the tutorials without a nosebleed. Awesome stuff!