Invincible ( Final Fantasy III ) The Great Ship Invincible is the final airship found in " Final Fantasy III " . It is found in the Ancient Ruins and obtainable only after awakening Unei . The " Invincible " is similar to a town , complete with an inn and shops . The shops are for magic , weapons , armor , and items with a place to summon the fat chocobo . In the DS version , the moogle allows access Mognet . In the iOS / PSP versions , another moogle allows access to the Bestiary and Achievements . The " Invincible " does not land ; the party enters and exits it via a ladder . Battles onboard the ship begin with a volley of cannonfire at enemies , and the ship ' s engines can be temporarily boosted to allow the ship to " jump " over small mountains . Story . The " Invincible " was an enormous battleship built by the Ancients many years before the game ' s events . Despite being considered the grandest airship ever constructed , it would later fall into obscurity along with the civilization that birthed it when its creators attempted to harness the power of Light for their own gain , inadvertently causing the " Flood of Light " which nearly destroyed the planet . Though the Warriors of Darkness were able to save the world in the end , the Ancients exiled themselves in shame , leaving the " Invincible " , along with the rest of their innovations , behind . During their quest to find the four Crystals , the Warriors of Light learn that the Crystal of Earth is hidden beyond a towering mountain range that no modern airship can scale . After speaking with the sorceress Unei , the heroes learn of the " Invincible " , which now rests in the Ancient Ruins near the Kingdom of Saronia . After braving the labyrinth ' s depths along with Unei , the four youths reach the airship and fly it from its tomb , now able to pass over the mountain peaks and continue their journey . Layout . The " Invincible " features a single enclosed main deck that also serves as the bridge which houses all of its amenities , as well as an exterior upper deck only seen in battle . Players are taken inside the ship automatically when boarding it from the world map , and can also enter it manually while in mid - flight by hitting the " cancel " button . While inside the ship , players have access to beds which recover HP and MP , four shops , and an area to summon a fat chocobo for item storage by using a Gysahl Green . In the Nintendo DS version , the interior also includes a moogle who can open the Mognet menu . The iOS / PSP versions includes another moogle next the the mognet moogle , speaking to him will bring up the Bestiary and Achievements pages . Taking the downward stairs will return the player to the world map , while interacting with the ship ' s wheel will allow them to take control of the airship . Shops . The " Invincible " has four shops which are accessible when the player is inside the ship ' s main deck . These are not manned , but rather have items placed on a counter which open a shop menu when interacted with . Musical themes . The theme used when a player pilots the " Invincible " across the world map is simply called " Invincible " on the NES version , which appears as track 39 on the . An arranged version appears on the DS remake , now called " Giant Battleship Invincible " , which is track 50 of . When the player is exploring the inside of the airship itself , the theme used is called " The Way to the Top " on the NES version , which was renamed " Road to the Mountain Top " on the DS remake . These songs are found as track 11 and track 13 on their respective albums . Other appearances . " Dissidia Final Fantasy " . The " Invincible " appears only as one of the difficulty modes of the Duel Colosseum . The enemy levels in this mode range from 61 to 90 . " Chocobo Racing " . The " Invincible " makes an appearance as a secret opponent in this racing game . The Invincible is the fastest character in the game . Etymology . The name may originate from Stanislaw Lem ' s story of the same name , where the " Invincible " is a space ship .