The Madyn Plains existed as a flatland on Rori, which itself was a moon orbiting the planet Naboo. This plain was situated in the area between the Lake Octir Swamp and the Narmle Bog.
Following the Battle of Yavin, a starship went down in the plains. At the controls was Cal Handro, a smuggler who was flying a novel type of spice on behalf of the Rebel Alliance.
Within the MMORPG Star Wars Galaxies, the Madyn Plains are featured as one of the game's many explorable planetary zones.