The Heroes of Poseidonis is a 1984 role-playing game supplement published by DAG Productions for Supergame.
The Heroes of Poseidonis is a supplement in which the campaign setting includes historical background information for Poseidonis in the South Pacific, as well as descriptions of characters, floor plans, and vehicles.
The Heroes of Poseidonis was written by Jay Hartlove and Aimée Hartlove and published by DAG Productions in 1984 as a 24-page book.