Lunar Ruins

Lunar Ruins is a bonus dungeon in Final Fantasy IV Advance and Final Fantasy IV The Complete Collection. It is located at the Stone Face on the Red Moon, a subtle reference to the found on Mars. It is unlocked by defeating Zeromus.

The iOS and Android versions of Final Fantasy IV has an all new "EX Dungeon," which is a remake of the Lunar Ruins.

The Stone Face is the new location of Golbez's second Challenge Dungeon in Final Fantasy IV: The After Years.

Layout
The Lunar Ruins' floors are randomized, and players will rarely experience the same pattern of floors twice. However, there are a few particular patterns.

There are ten sets of floors of which the sequence of the sets of floors is fixed. In each set, there are three normal floors and the fourth is a gate floor, which contains a save point, a door to each game character challenge (Trial), except the tenth set, which leads to Zeromus EG, and a stairway that leads in another set of floors (3 normals and a gate floor). Each floor is chosen randomly. There are some categories of floors:

There are normal floors, where you just need to reach the exit, you can encounter enemies and find treasures.

There are two villages that sell rare items and equipment at prices in upwards of 100,000 gil. By this time the player should be able to afford such prices, as enemies are likely leaving over 20,000 gil a battle.

Shrines with Sylphs are occasionally found, if only one Sylph is found, the characters will be healed, if three Sylphs, in addition of the full heal, the player will receive a Megalixir.

There are floors where some old men give the player a quiz, if answered correctly, the player will receive a prize and/or the exit.

Challenge floors appear where the player must conquer a certain challenge to win. In one, the player must memorize a code and find and hit the buttons in the order given; in another, they must find and kill a "Platinum Toad" for a man.

"Floors of Remembrance" mirrors the floors of previous dungeons the player has visited, and they can encounter enemies from that dungeon in addition to new enemies. Any chests that existed in the original dungeon will be present, but the items they contain will be different - some also have chests added where previously there were none.

There is one floor entirely of Flan monsters resistant to physical attacks, and another of monsters resistant to magic. NPCs will appear when the player enters these floors to tell them about this.

There are floors where mini-bosses or special enemies appear on the map, and the party must navigate through them to proceed.

Finally, near the bottom of the shrine the player may find a floor containing the Brachioraidos, the hardest boss in the game. A man at the entrance to the floor warns the player not to face it. It drops the strongest shield in the game, the Hero's Shield, which can be acquired nowhere else.

Floors
This is the list of the floors of the Lunar Ruins. This order is not the real one, some floors (with the exception of some) are randomized.

Trials
The only floors which the player is guaranteed to find are the Trials. The Trials are unlocked for each character once they defeat Zeromus, testing the player in multiple ways, and end with battles against Lunar versions of the summons. After defeating one of the Lunar Summons, the player gains a Grimoire for that summon, and is able to summon the Lunar Summon in battle once.

After completing a trial, the player gets either an ultimate weapon or accessory for the character whose trial is completed. To redo a trial, the player must first use the Grimoire gained from defeating the Lunar Summons in their respective trials.

Yang's Trial
Yang's trial is one of strength; the party must defeat many monks working in teams of eight - Soldier Monks, Super Monks, and Drillmasters. After defeating all the monks the party fights Lunar Titan. After its defeat, Yang gets the Discipline Armband, which turns his Power command into Deadly, which charges and then triples the damage.

Edward's Trial
Edward winds up in an illusion of Damcyan Castle's ruins, covered in ice and snow. The party is attacked by a Specter. It cannot be killed through normal means, but Edward uses the Requiem Harp to Sing and instead of the usual effect, he plays a Requiem, thus giving the tortured soul eternal rest. All the Specters (blue flames) throughout the ruins must be killed and Edward must use Sing while equipped with the Requiem Harp to lay it to rest. The party eventually finds an underground waterway and reaches a room where a fight with Lunar Shiva ensues. After her defeat, Edward gets the Harmonious Ring, which changes his Sing ability into Chant, casting Protect and Shell on the party.

Rydia's Trial
Rydia enters a cave filled with mist. She turns back into a child, and Ifrit, Titan, Ramuh, and Shiva abandon her. The party must find them and defeat them to regain them. After defeating them the mist dissipates, and the party fights Lunar Mist Dragon. After defeating it, the player gets the Mist Ring, which improves Rydia's Mist Dragon summon and grants the party the Blink status.

Cecil's Trial
Cecil enters a castle and is addressed by an unknown voice, who tests his abilities to do good deeds as a paladin. Cecil progresses through several rooms where he must prove himself as a true paladin by doing good deeds, such as by not taking treasures from others, fulfilling requests properly, and so forth. Cecil meets the king of the castle who gives him a sword based on the trial's success. If he does everything right, Cecil gets his ultimate weapon, the Lightbringer. If he fails even one test, he gets a weaker weapon, and gets a useless Throw item for Edge if he fails all of them. The player fights Lunar Odin regardless of which weapon they received.

Rosa's Trial
Rosa enters a town that is promptly destroyed. She must heal the injured townsfolk, fourteen in all, although some are just Metamorpha in disguise. After healing as many as possible before the time runs out, the party fights Lunar Asura. After her defeat, if Rosa healed all fourteen people, she gets the White Ring, which turns her Pray command into Miracle.

Edge's Trial
Edge winds up in a labyrinthine castle. He finds his way to the king and compliments the castle, but is dropped into another portion. He must find his way back to the king through a series of hidden passages, Pitfalls, traps, switches, and so forth. The Palace Guards drop Keys if defeated, needed for doors. After the ordeals, the player fights Lunar Ifrit. Edge gets the Hanzo Gloves, which turns his Steal command into Plunder, increasing the chances of a successful steal, as well attacking at the same time.

Kain's Trial
Kain enters the town of Baron where there have been several murders by a lance-wielding assailant. Kain investigates, and after Rosa is kidnapped, he is suspected as the culprit and is arrested. Kain clears his name, but does not feel content, and during the night, he sees Cecil walk into the Devil's Road house. Kain follows him and is warped to a strange mirror room where Rosa is bound and Cecil is unconscious on the floor.

In the mirror, he sees the dark reflection of himself, which is tempting him to kill Cecil. Kain can elect to do this, but the trial will end. Kain refuses, and must engage in simple combat with a Shadow version of himself, which transforms into Lunar Bahamut. After his defeat, he gets Abel's Lance, his ultimate weapon, which sometimes casts Tornado when he attacks, even if the enemy is immune to it, as well as the Dragoon Gloves, which allow him to Double Jump and increase his power.

Cid's Trial
Cid appears on an island, near his airship. A person on the airship asks him to fly him to a destination before the timer reaches a certain limit. At the destination, another person arrives and wants to be flown to another destination in a lesser time limit. After a while, Lunar Ramuh is angered about Cid flying all over his skies and attacks. After his defeat, Cid gets the Fiery Hammer, his ultimate weapon, which casts Flare at random when he attacks.

Palom and Porom's Trial
Both Palom and Porom must be in the party to perform this trial. Palom and Porom must work as a team, inflicting various status ailments on themselves to infiltrate a series of hidden passages. Switches in one passage typically open doors in the others, forcing them to work together and the player to switch control between the two frequently. Once they reach the end of the passages, the player fights Lunar Leviathan, and Palom and Porom get the accessories Twin Stars, which enable them to cast stronger spells, including Double-Meteor, with the Twin command.

The Final Trial
After the characters' trials, the last floor of the ruins contains the superboss Zeromus EG. They can choose not to fight him and can simply warp out of the ruins. Fighting Zeromus EG earns no rewards except for his Bestiary entry.

Enemy Formations
The enemy formations in the ruins varies greatly from floor to floor, and combines enemies met throughout the game with new enemies found only in the ruins. On some floors the enemies appear on the map and can be seen and avoided.

Caverns (Lunar)

 * Wicked Mask, Behemoth
 * Great Malboro
 * Black Flan x3, Goblin Prince
 * Goblin Prince
 * Goblin Prince x2
 * Wicked Mask, Dragon
 * Dragon Red, Mech Dragon
 * Giant Warrior, Giant Soldier
 * Goblin Prince, Echidna
 * Goblin Prince x2, Great Malboro

Waterfall Room

 * King Bomb
 * Lamia Queen, Goblin Prince x2
 * Lamia Queen, Great Malboro
 * Sahagin Prince x2

Cave of Summons

 * Gargoyle, King Bomb, Skeleton x2
 * Bloodbones, Palace Guard
 * King Bomb, Gray Bomb, Bomb x2
 * Chaotic Knight
 * Palace Guard, Goblin Prince, Cockatrice x2
 * King Bomb, Lamia Queen, Spirit

Floor of Attack-Resistant Monsters

 * Black Flan x2, Red Mousse x2, Golden Flan
 * Dust Mousse, Golden Flan, Yellow Jelly x3
 * Dust Mousse, Golden Flan, White Mousse x3
 * Dust Mousse, White Mousse x2, Purple Bavarois x2
 * White Mousse x2, Red Mousse x2, Golden Flan x2
 * Dust Mousse x2, Black Flan x2, Purple Bavarois x2
 * Dust Mousse x3, Golden Flan x3
 * Flan Princess x8

Floors of Remembrance
Lunar Path
 * Lamia Queen x3
 * Echidna, Abyss Worm
 * Lamia Queen, Dark Grenade
 * Lamia Queen, Dark Grenade x3
 * Echidna, Prokaryote, Lunar Virus

Underground Waterway (South)
 * Fiend Dragon, Alligator
 * Sahagin Prince, Killer Fish, King Bomb x2
 * Sahagin Prince x2, Gigantoad, Red Mousse

Underground Waterway (North)
 * Vile Shell, Water Bug, Echidna
 * Echidna, Gigantoad, Lamia Queen
 * Toadgre, Lamia Queen
 * Tiny Mage x3, Sahagin Prince

Sylvan Cave
 * King Bomb x3
 * King Bomb, Malboro x2
 * Coeurl Regina
 * Palace Guard
 * Lamia Queen, King Bomb, Evil Dreamer

Giant of Babil
 * Beamer x2, King Bomb
 * King Bomb, Centaurion
 * Palace Guard
 * Palace Guard, Centaurion
 * Lamia Queen x2, Beamer x2

Mt. Ordeals
 * King Bomb, Gargoyle, Skeleton x2
 * Bloodbones, Palace Guard
 * King Bomb, Palace Guard
 * Palace Guard, Goblin Prince, Cockatrice x2
 * King Bomb, Gray Bomb, Bomb x2

Cave of Eblan
 * Palace Guard x3
 * Palace Guard, Bloody Bat x3
 * Skuldier x2, King Bomb x2
 * Lamia Queen, Palace Guard

Tower of Zot
 * Crystal Dragon, Black Lizard
 * Evil Doll, Ironback, Palace Guard
 * Fiery Hound, Ghost Knight, King Bomb x2
 * Coeurl Regina, Lamia, Lamia Matriarch
 * Palace Guard x2, White Mousse x2

Bomb Floor
 * Balloon x2, Dark Grenade x2
 * Bomb King
 * Melt Bomb

Yang Type 1

 * Dry Ether
 * Remedy

Yang Type 2

 * Remedy
 * Elixir
 * X-Potion

Yang Type 3

 * X-Potion
 * Phoenix Down

Yang Type 4

 * Dry Ether x2
 * X-Potion

Yang Type 5

 * Cottage
 * Dry Ether

Yang's Trial

 * Discipline Armband
 * Silver Apple (After completing trial for second time)
 * Lunar Titan Grimoire

Edward Type 1 - Floor of Remembrance - Antlion Cave

 * Elixir

Edward Type 2 - Floor of Remembrance - Lunar Path

 * Cottage
 * Phoenix Down

Edward Type 3 - Floor of Remembrance - Underground Waterway

 * Cottage
 * X-Potion

Edward Type 4 - Floor of Remembrance - Giant of Babel

 * X-Potion
 * Dry Ether

Edward Type 5 - Floor of Remembrance - Chocobo Forest

 * Piggy's Stick

Edward's Trial

 * Requiem Harp
 * Harmonious Ring
 * Gold Hourglass (After completing trial for second time)
 * Lunar Shiva Grimoire

Rydia Type 1 - Waterfall Room

 * White Dress
 * X-Potion
 * Cottage

Rydia Type 5 - Counting

 * Megalixir (if answered correctly)

Rydia's Trial

 * Mist Ring
 * Soma Drop (After completing trial for second time)
 * Lunar Dragon Grimoire

Cecil Type 1 - Platinum Toad

 * Ribbon

Cecil Type 3 - Enemy Cave

 * Asura's Rod
 * Elixir (x2)

Cecil Type 4 - Teleporter Maze

 * Sasuke's Katana
 * Elixir
 * Dry Ether

Cecil's Trial

 * Megalixir (if taken during trial)
 * Golden Apple (if taken during trial)
 * Lunar Odin Grimoire
 * Scrap Metal (if passed 0 times)
 * Dark Sword (if passed 1 time)
 * Shadow Blade (if passed 2 times)
 * Caliburn (if passed 3 times)
 * Flandango (if passed 4 times)
 * Lightbringer (if passed 5 times)
 * Lunar Curtain (After completing trial for second time)

Rosa Type 1 - Floor of Remembrance - Giant of Babel

 * X-Potion
 * Dry Ether

Rosa Type 2 - Floor of Remembrance - Sylvan Cave

 * Dragon Claw
 * Megalixir (in pot by house)

Rosa Type 3 - Floor of Remembrance - Tower of Zot

 * Remedy

Rosa Type 4 - Floor of Remembrance - Magnetic Cave

 * Elixir

Rosa Type 5 - Floor of Remembrance - Mount Hobs

 * Red Fang

Rosa's Trial

 * Lunar Asura Grimoire
 * X-Potion (if rescued 2-4 people)
 * Dry Ether (if rescued 5-7 people)
 * Elixir (if rescued 8-10 people)
 * Megalixir (if rescued 11-12 people)
 * White Ring (if rescued 13 people)
 * Perseus Arrow (After completing trial for second time)

Edge Type 1 - Floor of Remembrance - Eblan Cave

 * Dry Ether

Edge Type 2 - Floor of Remembrance - Tower of Babel

 * Dry Ether

Edge Type 3 - Floor of Remembrance - Old Waterway

 * Dry Ether
 * Remedy
 * Gysahl Whistle

Edge Type 4 - Floor of Remembrance - Underground Waterway

 * Blue Fang

Edge Type 5 - Floor of Remembrance - Sealed Cavern

 * Dragoon Plate
 * Cottage
 * Dry Ether

Edge's Trial

 * Hanzo Gloves
 * Lunar Ifrit Grimoire
 * Magazine (After completing trial for second time)
 * Key

Kain Type 1 - Treasure Room

 * Red Fang
 * Blue Fang
 * White Fang
 * Dry Ether (x2)
 * Elixir (x2)
 * Soma Drop
 * Perseus Bow
 * Golden Apple
 * Light Curtain
 * Megalixir
 * X-Potion (x2)
 * Cottage

Kain Type 2 - Pudding Room

 * Dry Ether
 * Elixir
 * Gysahl Whistle

Kain Type 3 - Choose the Door

 * Silver Apple and Golden Apple (Fruit Basket set)
 * Siren and Alarm Clock (Mech set)
 * Shuriken and Fuma Shuriken (Shuriken set)
 * Dry Ether and Soma Drop (Magical Box set)
 * Megalixir (Paladin set)
 * Gaia Drum and Gysahl Whistle (Music Box set)

Kain Type 4 - Dragon Room and Bridge Maze

 * Cottage
 * Dry Ether
 * Loki's Lute (hidden in crate in the bridge maze)
 * Elixir

Kain's Trial

 * Dragoon Gloves
 * Abel's Lance
 * Lunar Bahamut Grimoire
 * Megalixir (After completing trial for second time)

Cid Type 1 - Bombs!

 * Bomb Arm (x3)
 * Bomb Fragment
 * Megalixir

Cid Type 2 - Item Puzzle

 * Megalixir

Cid Type 3 - Lunar Cave Area

 * Rainbow Dress

Cid's Trial

 * Fiery Hammer
 * Stardust (After completing trial for second time)
 * Lunar Ramuh Grimoire

Palom and Porom Type 1 - Floor of Remembrance - Giant of Babel

 * Cottage
 * Gysahl Whistle
 * Megalixir
 * Mutsonokami

Palom and Porom Type 2 - Floor of Remembrance - Lunar Subterrane

 * Megalixir

Palom and Porom Type 3 - Floor of Remembrance - Land of Summons

 * Megalixir
 * Cottage

Palom and Porom Type 4 - Floor of Remembrance - Mount Ordeals

 * Ceasar's Plate

Palom and Porom Type 4 - Floor of Remembrance - Mist Cave

 * White Fang
 * Mist Whip
 * Cottage

Palom and Porom's Trial

 * Twin Stars x2
 * Lunar Leviathan Grimoire
 * Gold Apple (After completing trial for second time)
 * Silver Apple (After completing trial for second time)

Final Type 1 - Doll House

 * Nirvana

Final Type 2: Lunar Ruins (Brachioraidos)

 * Hero's Shield

Final Type 3 - Lunar Cave Area

 * Vishnu Vest

Final Type 4 - Protophase Room

 * Red Fang
 * Blue Fang
 * White Fang
 * Ribbon

Final Type 5 - Lunar Cave Area 2?

 * Ribbon

Trivia

 * The concept of trials relevant to specific characters and their abilities appear to be inspired from the Finale Chapter of the video game , a game made by Square and a majority of the Final Fantasy team at the time, three years after the release of the Super Famicom release of Final Fantasy IV, and most notably directed by Takashi Tokita, who also has an extensive profile in scenario design in the Final Fantasy series and in his career at Square.
 * Edge's trial bears similarities to the trial of the ninja Oboro-maru in the Live-A-Live series, the Dungeon of Keys. Both involve defeating enemies for keys, and navigating through a labyrinth to successfully pass the trial.
 * The game also served as an inspiration for Final Fantasy IV: The After Years.
 * Many concepts for the Lunar Ruins were reused for Final Fantasy IV: The After Years. Yang's Lunar Trial consists of him fighting his way past rows of monks, and his Challenge Dungeon is similarly a gauntlet of corridors with high-powered enemies. Rydia's Lunar Trial is to defeat Titan, Shiva, Ramuh and Ifrit before fighting the Lunar Dragon, while in The After Years the Mist Dragon returns to Rydia once Titan, Shiva, Ramuh, Ifrit, and Sylph are defeated. Porom's Challenge Dungeon has her travel around a field performing good deeds for people including healing services and must help as many as she can within a time limit, similar to Rosa's Lunar Trial. Troia Castle is frozen over by Shiva in The After Years, similar to the recreation of Damcyan in Edward's trial, while Eblan is attacked by Ifrit much as Lunar Ifrit serves as the master of the castle in Edge's trial. Dark Kain reappears in The After Years as a major antagonist, and in a flashback is shown to manifest as he did in Kain's Lunar Trial, emerging from Kain's reflection in a mirrored chamber and attacking him. The idea of the Challenge Dungeons themselves - optional bonus dungeons reflective of the characters whose tale the player is playing - is also reminiscent of the Lunar Ruins.