From the publisher:

Arcanum, Call to Adventure is the newest expansion for the Arcanum game system. Take the old map tiles and throw them away, we have new, better tiles for you now. A hex shaped tile replaces the old tile system and allows easier movement through trails and better overall graphics. Now the creation of the Arcanum world falls into your hands, as you and other players try out new configurations and pathways to adventure.

Expands:

• Arcanum