Lunar Ruins

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

Layout
The floors of the Lunar Ruins 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 floor is fixed. In each set, there are five normal floor and a a sixth gate floor, which contains a save point and a door to each game character challenge (except the tenth set, which leads to Zeromus EG). When traveling in Lunar Ruins, in each set first four floors are chosen randomly from the five normal floor and the fifth floor is the gate floor.

There are two villages that sell rare items and equipment, but at obscene prices in upwards of 100,000 gil. However, by this time in the game the player can afford such prices as enemies are likely leaving over 20,000 gil a battle.

Shrines with Sylphs occasionally are found, and the Sylph will heal the party.

There is also a floor where an old man gives the player a quiz to determine what job class they'd be. Depending upon the player's results, he will give you a unique gift at the end, such as a Golden Apple and a Silver Apple for someone who recieves a Monk as a result.

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 Rememberance" mirror 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 that 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 resistance to 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 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. However, it drops the strongest shield in the game, the Hero's Shield, which can be acquired nowhere else.

Trials
The only floors which the player is guarenteed 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 these 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 also 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 8 - Soldier Monks, Super Monks and Drillmasters are the enemies that are fought. After defeating all these 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, then 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 as a reward, 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 gain them back. Finally, after defeating all of 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 in addition to attacking.

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 then progresses through several rooms where he must prove he is a true paladin by doing good deeds, such as not taking treasures from others, or fulfilling requests properly, and so forth. Cecil meets the king of the castle who gives him a sword based on the success of his trial. If he does everything right, he gets his ultimate weapon, the Lightbringer - 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 then fights Lunar Odin regardless of which weapon they recieved.

Rosa's Trial
Rosa enters a town that is prompty destroyed. She must heal the hurt people in the town, 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 quickly 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 around here drop Keys if defeated, which are needed for doors. After these 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 as an attack 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 quickly clears his name, however, he 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 then the trial will end. Kain refuses, and must engage in simple combat with a Shadow version of himself, which quickly 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 increases 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. Then at that 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 & Porom's Trial
Both Palom and Porom must be in the party to perform this trial. Palom and Porom, must work as a team in this Trial, inflicting various status ailments on themselves to infiltrate a series of hidden passages. Switches in one's passage typically open doors in the other's, forcing them to work together and the player to switch control between them frequently. Once they reach the end of the passages, the player fights Lunar Leviathan, and Palom and Porom get the accessories Twin Stars, which enables them to cast stronger spells, including Double-Meteor, with the Twin command.

The Final Trial
After the character's trials, the last floor of the ruins contains the superboss Zeromus EG. However, they can choose not to fight him if they desire and can simply warp out of the ruins otherwise. Fighting Zeromus EG earns no rewards but for his bestiary entry.