I absolutely love this game. Played it at PAX East one year, met the devs (nice guys), and couldn't wait for it to come out on PC to play it at home. Something about the aesthetic, subject matter, puzzles, and music all work together so well to create such a great and unique (to me, at least) experience. And one free of the usual time pressure, twitchy shooting, etc. It's something special to have the main game mechanic woven into the story like that. And that ending... hoo boy.
I have definitely been championing this game every chance I get (hence this post, too), though generally stopped being so obnoxious about it once it went on PlayStation Plus free this past January (three way cross-buy!). As much as I love my Vita the best way to play is on a larger screen, in a darkened room, free of distractions