This was actually a really cool movie to watch. The combination of crazy structures and acrobatic parkour enthusiasts is just a really cool art to watch. In addition, the music was well done. Yes it was nothing horribly new to the genre and didn't add much to the story, but it fit pretty well with the atmosphere of the film in most places.

Where the movie really fell short is its failure to blend fantasy and reality. With world building you either need to build a hyper realistic world with great attention to the tiniest details (this often leads to a lot of explaining as everything has to have a definitive cause and reaction) or you can build a world of pure fantasy and imagination.

This movie tried to make a realistically plausible that the events could occur, which is perfectly alright on its own. But then a severe lack to detail and understanding made the story seem sloppy as the world building was supposed to be more realistic. Simple things like the ability to jump on bubbles that weren't in gravity wells were left unexplained, and the simple fact that these games with children doing dangerous parkour were even allowed to exist by the government in the first place (especially after reaching livestream popularity). If set in a fantasy world these things are fine, but if you try to set a movie in the real world and treat it as pure fantasy, it leaves a bad taste.

So yes, many elements of the film were done masterfully but ultimately the lack of attention to detail made the fantasy world of bubbles that the beautiful artwork brought me into, simply pop and fall flat.