Hunter X Hunter, the manga series written and illustrated by Yoshihiro Togashi, is coming to the PSP this winter. The IP has also been adapted to anime series which aired on Japanese television, and a feature film adaptation was announced this month as well. The game is called Hunter X Hunter Wonder Adventure, though little else is known about the new title at this point.
Ten games about the Hunter X Hunter series have previously been published--some by Namco Bandai, and some by Konami. Hunter X Hunter Wonder Adventure is being described as an action-adventure title, so it'll be interesting to see how both of those elements work together.