GANTZ was great, but I would personally recommend reading the original manga for the best experience. From what I remember, the anime did not really capture the dark atmosphere all that well in all details (even though it was still plenty dark), and the actors in the live action adaptation were perhaps over-acting a bit? And of course there is only so much you can cram into a 2 hours long movie.
That being said, reading the manga is a much larger time investment, so I suppose watching the movie or anime is still a much better experience than not experiencing GANTZ at all. :)
GANTZ was great, but I would personally recommend reading the original manga for the best experience. From what I remember, the anime did not really capture the dark atmosphere all that well in all details (even though it was still plenty dark), and the actors in the live action adaptation were perhaps over-acting a bit? And of course there is only so much you can cram into a 2 hours long movie.
That being said, reading the manga is a much larger time investment, so I suppose watching the movie or anime is still a much better experience than not experiencing GANTZ at all. :)