This Jap manga/animae should be familiar to the 'otakus' out there.
The comic & animation was violent, bloody, at times funny & with lots of boobs all in one.... & the live action trailer certainly looks promising.
Synopsis for the non fans: The films stars Kazunari Ninomiya as Kei Kurono and Kenichi Matsuyama as Masaru Kato, two college students who die in a train accident only to be brought back to life by a mysterious black sphere known as GANTZ. Equipped with advanced weaponry and special suits that give them superhuman abilities, they’re forced to carry out alien assassination missions, earning “points” toward eventually buying their freedom. However, various incidents along the way complicate matters.
(synopsis & trailers from BeyondHollywood.com)