A really cool really fun adventure with gravity and two distinct worlds coming together. The plot isn't necessarily that deep even with its twisty nature, but the worldbuilding is strong enough to support the idea of two closed-off civilizations adjusting to this post-apocalyptic world of weird gravity stuff. I also liked the main couple; it's rare in Japanese animation to see characters so physically intimate, but obviously the movie requires it.
Unfortunately the movie has about half the budget it needed to be something truly special. The animation is normally OK but nothing film-quality, and the use of CGI to skirt certain scenes and save money is often jarring. This may have been able to be a masterpiece-- it's far more imaginative and beautiful than its contemporary Children Who Chase Lost Voices-- but it got shafted by not being able to afford its own ambitions.
