The game can be played in one go; however, you can also tackle it over multiple sessions. To save your game progress, put all collected Items, Prophecies, and Scenery cards in a zipper-seal bag. Leave them all on the same side that they were on the table (do not turn them over). You can rebuild the map by following the links shown on the cards (you can also take a picture, for reference). Put the Scenery card deck, the Item deck, and the Interaction deck into another bag, avoiding mixing them up. Finally, put all discarded cards into another bag. Restoring the game should come easy with everything well organized.