I wasn't particularly hit by this game (except for the spikes, that was a nice little quirk). When I played it, all I saw was another Portal-inspired scenario and a fairly short game; not that it's bad or anything, but themes like these were nothing new even when it came out. Also, after a few areas you get the gist of the mechanics and it becomes an ordinary puzzle game until the ending, which is special and deserves some praise nonetheless.
My experience was a bit marred by Depict1 having slowdowns on Vista, I admit; luckily it was remade in Flash later on. Definitely worth playing.