Final Fantasy IV Advance Unlockables and Easter Eggs (GameBoy Advance)

Final Fantasy IV was ported a second time by TOSE and released as Final Fantasy IV Advance. It was released in North America by Nintendo of America on December 12, 2005; in Japan by Square Enix on December 15, 2005; in Australia on February 23, 2006; and in Europe on June 2, 2006. The ESRB rated it E-10 (Everyone 10 and older) and the CERO designated it for all ages. In Japan, a special version was available which included a limited edition Game Boy Micro with a themed face plate featuring artwork of Cecil and Kain. The developers made several changes for this release.

The enhanced graphics from the WonderSwan Color port have been even further improved and minor changes have been made to the music. Earlier versions of the game also suffered from many bugs during battles, but these were fixed for the European release. The localization team revised the English translation, improving the flow of the story and certain plot details absent from the original have been restored. The player can change characters among Edward, Yang, Porom, Palom and Cid after defeating the Giant of Babel, although Cecil must be in the party at all times.

Unlockables

Lunar Ruins
Beat the game once to unlock the Lunar Ruins. Inside there will be a trial for each of your characters but to unlock these you must beat the final boss with each character at least once.

Music Player
Beating the game once unlocks the Music Player. It can be accessed under "Extra" on the title screen.

The Cave of Trials
An eight floor dungeon containing weapons and armor for the party members you couldn't use for the final dungeon in the original. Once you unlock Party Switching and head back to Mysidia, you'll be informed of a new challenge at Mt. Ordeals. A scene will occur once you get there and the Cave of Trials will be accessible.

Easter Eggs

1991 Dev Team Office

The Developers' room is now renamed to the 1991 Dev Team Office.

To get there, reach the Underworld for the first time. After gaining access to the armory (after beating Golbez in the crystal room) go down to the Weapon/Armor room and go behind the pillar between the two shop desks. From there, go up, you'll then be in the Lali Ho Pub (another secret room). Then, go right to where there's a dark marking on the floor and progress right through the wall and down a stairway. You will now be at the 1991 Dev Team Office entrance, where you can talk to the developers of the original game, complete with their rank back when they worked on the game in 1991.

Here's a great boss battle from this old-school title: