Previously, previously, previously.
I am excited :)
If that's the teaser (videos problematic right now), you may also be excited by a little E3 gameplay footage.
Fluids! Ok, still giant spherical particles, but that might be some kind of metaball rendering or something, because they look half-decent. And should make for some interesting puzzles.
It's also interesting that, so far, the lethality looks much higher—like the original Portal 1 trailer, where the first puzzle shown had a flame-pit and descending spike ceiling to make you act fast.
Man, the combination of a destroyed, decaying machine spontaneously waking up and that vocoder voice is pretty shockingly menacing.
My eye sight is decaying at a similar rate to the improvement in computer graphics. Soon, I won't be able to tell the difference between video of real things and video of computer models.
I can't tell whether this is a good or bad thing. It could make my life damned entertaining.
Did you happen to notice a certain Weighted Companion Cube cameo in the trailer? Here's a hint... 0:22