List of Optional Dungeons

From Golden Sun Universe
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In the Golden Sun series, there are various dungeon-style locations that are not mandatory to complete for the sake of reaching each game's ending. This includes one main one in the original, and four main ones in the Lost Age.

Golden Sun optional dungeons

Golden Sun has several dungeon-style locations throughout the game

Fuchin Falls Cave

Fuchin Falls Cave, located within Fuchin Temple, can be entirely skipped, though you will not gain the Orb of Force, the Arctic Blade, or the Jupiter Djinni Zephyr.

Vale Cave

Vale Cave, located within Vale, is more of a "hidden dungeon", and a somewhat small one; it contains the Halt Gem and the Jupiter Djinni Kite.

Vault Cave

Vault Cave, located within Vault, is another "hidden dungeon" very close to Vale and its cave, which going through allows access to the Vambrace and the Venus Djinni Sap.

Gondowan Cave

Gondowan Cave, the two entrances of which are located southeast and northeast of the Karagol Sea, is a location that serves as a pathway allowing the player to travel back and forth between the Tolbi and Kalay sides of the Karagol.

Lunpa Fortress

Lunpa Fortress, located within Lunpa, is a more complex dungeon that is relevant to a subplot in Golden Sun, complete with its own boss battle, access to the Mythril Circlet and the Mercury Djinni Tonic, and opening up the weapon and armor vendors in Lunpa.

Crossbone Isle

Crossbone Isle is the hidden, optional "super-dungeon" of Golden Sun that is intended to be a greater challenge than even the final mandatory dungeon. It consists of nine puzzle-filled, random-encounter-free floors, each level being guarded by at least one powerful "mini boss" enemy at its door, and all sorts of powerful and unique equipment can be found there, as well as the Venus Djinni Bane. At the bottom is the encounter with Deadbeard, the first game's resident "optional superboss", and defeating it earns you the Demon Mail.


Golden Sun: The Lost Age optional dungeons

Despite this game being much longer than the first one, it has somewhat less of an emphasis on dungeons that are optional over the course of the main game and far more emphasis on optional, challenging late-game dungeons. (It could be said that this is a main reason why the second game is much longer.) This does not include the various one-room cave locations that contain single puzzles that reward you with Summon tablets.

Madra Catacombs

Madra Catacombs, located in Madra, is an underground area with a couple key collectibles - the Tremor Psynergy, which is helpful but not mandatory to completing the game, and the Moloch summon. Various aspects of this area become explorable over time, but you need the Frost and Reveal Psynergy to loot it fully.

Alhafran Cave

Alhafran Cave, located in Alhafra, is a small underground location first accessible only by giving the Large Bread to a hungry kid in town, so that the father guarding the entrance lets you pass. It most notably contains the Ixion Mail.

Gabomba Catacombs

Gabomba Catacombs is essentially an optional "second half" to the mandatory "first half" known as Gabomba Statue, located within Kibombo on Gondowan. It can only properly be explored and cleared later on, though, after getting the Cyclone Psynergy. It contains, most notably, the Tomegathericon class-changing item.

Taopo Swamp

Taopo Swamp, located southwest of Yallam on the continent of Osenia, is a large and multi-segmented location with above-ground, cavernous, and volcanic areas. Collectable are two Tear Stones and one Star Dust forgeable material, as well as the Venus Djinni Flower.

Izumo Ruins

Izumo Ruins, located in the town of Izumo, is an underground dungeon that can only be properly explored with the Sand Psynergy. Notable collectibles are the Phantasmal Mail and the Ulysses summon sequence.

Treasure Isle

Treasure Isle, the island located in the northeastern area of the world map, is one of the four main optional late-game dungeons, though parts of it can be explored earlier on in the game. The most noteworthy feature, even beyond the large amounts of powerful treasure and the Jupiter Djinni Gale, is the battle with the powerful and tricky optional boss Star Magician, and defeating it earns you the Azul summon sequence.

Yampi Desert Cave

Yampi Desert Cave, hidden within the early-game area of Yampi Desert and accessible only with the Teleport Psynergy, is one of the four main optional late-game dungeons. It is large and inter-connected, and is home to the Venus Djinni Crystal. At the end is the battle with the burly boss Valukar, and defeating it earns you the Daedalus summon sequence.

Islet Cave

Islet Cave, accessible with the turtle at the Sea of Time Islet only after completing a chain of trades across the Great Eastern Sea, has an area that can be accessed much earlier and gives you the Venus Djinni Meld. With the Teleport Psynergy, you gain access to a very straightforward series of halls, one of which contains the Mercury Djinni Serac, and at the end is the battle with the powerful boss Sentinel. Defeating it earns you the Catastrophe summon sequence.

Anemos Inner Sanctum

Anemos Inner Sanctum is the interior portion of Anemos Sanctum that can only be accessed by both the Teleport Psynergy and by collecting all 72 Djinn in the Golden Sun series. It is the intended ultimate challenge of the game, and contains both of the heaviest summons in the game, Charon and Iris. At the end is the battle with the strongest optional boss in the series, Dullahan, which you must fight for Iris.


Golden Sun: Dark Dawn optional dungeons

In stark contrast to its predecessors, every dungeon in this game is mandatory up until the endgame, where a scant few lategame areas appear, and most can only be fully explored in a postgame file because they either require the usage of the Sol Blade as a key or the usage of an environmental element that appears on the world map in a postgame file. Each of these three dungeons contains a boss that is part of this game's resident set of four Summon-guarding "super-bosses", and the fourth of these encounters are the Ogre Titans guarding the Daedalus summon in a secret room in Burning Island Cave that can only be opened in a postgame file by the Sol Blade from Apollo Sanctum.

Lost Ship

The Lost Ship lies hidden in the purple fog near the top of the Eastern Sea - but the precise spot the sailing ship must reach in order to enter it can only be reliably entered by finding four finger-shaped rocks east of it, pressing the ship against the "middle finger", and then sailing west from that point without inputting any direction other than left. This ship is the new haunt of the Star Magician and the Azul summon sequence, and is the only optional dungeon and boss that can be attempted before the game's final dungeon - it can be entered as soon as the sailing ship is acquired.

Otka Island

Otka Island lies in an enclosed area of the sea east of the Angaran mainland, and can only be entered and exited by letting the sailing ship get caught up in a whirlwind that passes by it. The first room of this location can be accessed as soon as the sailing ship is first acquired, and a Jupiter Djinni can be found here if visited with Himi and her Search Psynergy in the party's ranks - but a massive maze of blank, cubical rooms lies beyond a door that can only be opened with the Sol Blade. Several powerful treasures repose in some of the rooms, but of particular note is the room in which the Ancient Devil guards the Catastrophe summon.

Crossbone Isle (Dark Dawn)

This incarnation of Crossbone Isle is the hidden, optional "super-dungeon" of Golden Sun: Dark Dawn. It is the only location on this list that can only be accessed after the game is completed; it lies at a sunken segment of the world map to the southeast, which can only be accessed by steering the ship into a vortex that appears south of Angara after the final boss has been defeated. This dungeon has no bearing on the game's canon - indeed, it appears to be a thematic amalgamation of the first game's Crossbone Isle and the second game's Anemos Inner Sanctum, with a linearly-arranged set of puzzle-filled floors and its own collection of the strongest random monsters in the game, as well as the return of the Charon summon tablet, Dullahan, and the Iris summon tablet that it guards. Its many treasures include the rusty Sagittarius Bow, the Bloody Claw, and the Cleric's Ring.


Trivia

An interesting thing about the four main optional dungeons in The Lost Age is that three of them, Treasure Isle, Islet Cave, and Yampi Desert Cave, represent a specific element, Mercury, Jupiter, and Mars respectively, as said by their bosses, with Anemos Inner Sanctum representing light, as said by Dullahan. Venus is oddly missing from this supposed pattern. There is a slight amount of speculation that the Parchable lake in Mikasalla was meant to lead to this dungeon, but was scrapped by Camelot. Another theory is that the dungeon Lunpa claimed to get the Grindstone from was meant to represent this, with the programmers not putting the dungeon into the gamecode for some reason. However, the Dullahan itself is heavily Venus-based in its resistances, and it is likely just fan speculation, especially considering connections between Light and Earth made elsewhere in the game.

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