This movie confused me a bit about where it fits in the Gantz timeline, but that doesn’t really matter. As a standalone movie, it’s great. It throws you straight into the action and lets every character shine, especially Kato, who is the best boy as usual. The 3D CG is also quite good; it doesn’t feel unnatural, and the style works really well for this anime. At times, the scenes were a bit too dark, and I had to squint to see what was happening, but overall it was great.