Atlantis: The Second Age is a game based on The Arcanum, describing a world much like a mythologized Earth. The game uses a variant of the Omni System, the original system of the Talislanta game. Atlantis: The Second Age was published by Morrigan Press; the PDF version on Drivethru is currently being sold by Khepera Publishing.
Atlantis: The Second Age was followed up by a substantially revised game of the same name by Khepera Publishing.