Gantz: O (Blu-ray release 2017-2-22) is a CG movie that is based on the manga series – When some people die, they are resurrected by a mysterious black ball to fight aliens.  They gain points in this process.  Reaching 100 points, they’ll be given a choice of strong weapon, resurrection of a teammate, or being freed from this game.  This movie works like an extended TV episode with extremely extended fights, and villains that repeatedly refuse to die.  Even though the CG battles are impressive, there is incredibly little plot to be found here, especially for those who watched the previous entries.  To make matters worse, a large part of the screenplay is filled with annoyingly inappropriate dialogue from a female love interest.