Gantz (2010) is a Horror, Action, Science Fiction film that follows after trying to rescue a man on the subway tracks, two teens wake up in a room dominated by a mysterious black sphere that sends them to hunt down and kill aliens hiding on Earth. Gantz is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 6.6 out of 10 from 334 votes. Fans of horror movies may also want to explore similar titles below.