Not sure if it counts, since it was already announced game, but for me Wild was most interesting game I've seen.
Cevat was unusually humble (lessons learned I guess) on stage...that's a surprise...anyway, that ball-bot had somewhat Wheatley (Portal 2) feel to it, and all the (supposed) bad time-travel jump makes Robinson strong 2nd.
I loved Kara demo, but, tbh, Detroit was a bit of a disappointment for me - that's mainly because I don't want another interactive story from QD, but rather spiritual successor to Omikron (if not Omikron 2 itself)...plus I expected somewhat more distant future, and when he said they went to some city, I really hoped for Hong Kong or something like that, since that would look very much like Blade Runner. In addition, after pretty great Humans on AMC with similar theme, I don't expect Cage's usually less than stellar writing to excite me a lot...but I don't want to be too negative about it all this early.
EDIT: I forgot Dreams, that was very nice too.
