Gantz (2010)

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.

Genres: Horror, Action, Science Fiction

What to watch after Gantz

• I Am a Hero (2015) — Shinsuke Sato directed both
• Suicide Club (2001) — Same subject: japan
• Parasyte: Part 1 (2014) — Same subject: alien
• Godzilla: Tokyo S.O.S. (2003) — Same subject: japan, tokyo, japan
• Godzilla: Planet of the Monsters (2017)
• Ninja Assassin (2009)