Welcome to .hack//UNIVERSE, the ultimate .hack fansite. .hack is a franchise from Japan that consists of TV shows, video games, comic books, trading cards, and much more.

.hack is about the MMORPG "The World". It was released worldwide at midnight on December 24, 2007. Things were good... until now. Inexplicable cases of comatose users of "The World" have been reported. What will happen? How will this situation be cured? Can this situation be cured?