Very neet platformer concept. Not sure how eternity ties into gravity-reversal, but hey, something something space-time, right? I'm also glad the Torifune episode of the Music CD series is gaining attention - that bit about an abandoned greenhouse floating in space came out of left field, but leaves so much to explore. There were some places still buggy, where switching would make you fall through the floor sometimes, but I managed to clear it in the end. The music and writing hold their own too, so there's also the well-rounded-ness aspect I guess.