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Spoiler alert

The future doesn't belong to you!

For those who have not completed games in the Xenoblade Chronicles series, this page contains spoilers regarding the plot. Discretion is advised.

Prison Island Location

Prison Island on Bionis

Prison Island is an area in Xenoblade Chronicles. It is a floating island in Eryth Sea, on Bionis' head. Shulk visits the island twice in the main plot. On the first visit, none of the teleporters work, but they are all working for the second visit, and are used to proceed to the top.

Story

SX4P01-20 1

Prison Island

It is named Prison Island because in legend, the ancestors of the High Entia imprisoned something here. Soon after departing Colony 6, Shulk has a vision of the terrace, and that the Monado easily slashes through Metal Face's armor. Because of this, he decides to travel here to boost the Monado's power. When he arrives with his party, they head up to the top and find a chained giant, Zanza. Shulk frees the giant, who releases the Monado's power in return, transforming it into the Monado II. Not long afterwards, Metal Face arrives and shoots Zanza and slashes Sorean Antiqua, killing both the giant and the High Entia Emperor. Just as the party is about to defeat Metal Face, Face Nemesis jumps in the way. The armor is damaged, revealing that this Faced Mechon is Fiora, who flies away with Metal Face. Shulk and his friends leave Prison Island, planning to head to Sword Valley and find Fiora.

Prison Island Revisited

After Bionis awakens, Prison Island sinks into its head. After defeating Lorithia at Bionis' Interior, Shulk and his party use the dark teleporter to reach here, intending to defeat Dickson. The map is completely different to the first time they visit, and many more areas are accessible. Eventually they reach the terrace, where they fight Dickson. Upon victory, they use another dark teleporter to go into space, ready to confront Zanza.

Purpose

When first mentioned, Prison Island is said to be a floating prison under High Entia Imperial jurisdiction. But it later becomes clear that there is only one prisoner — Zanza in the body of the giant, Arglas. Its only accessible interior room is an entrance path with an opulent staircase and demonic decor. Zanza does not live in this vast interior, but instead was long chained on a high terrace. Furthermore, the High Entia admit that Prison Island was not built by them, but has existed for a very long time.

When Prison Island becomes more thoroughly explorable late in the game, it becomes clear from the layout, the banquet hall and the throne room, that it was probably never meant as a prison at all, but was actually someone's palace. The decor (and the size of the rooms, furniture and flatware) are all of Giant architecture. Since Arglas was a Giant under Zanza's control, and Dickson is a Giant disciple of Zanza, Prison Island may have been a Giant palace or city, appropriated for the use of Zanza's disciples.

Secret Rooms

XENOBLADE Pris Is Secret Rooms

Secret room in Prison Island

On the second visit to Prison Island, secret rooms with giant's Treasure Chests can be found, but they are only accessible when the Bone Pillar has been lowered. If the Bone Pillar has already been raised, it can be lower again by activating the same panel. To get to this panel the Kitchen must be reentered, requiring the Kitchen Door Key from the hall south of the Arena.

Landmarks and Locations

First Visit

Landmarks GF

Locations GF

Locations 4F

Landmarks 6F

Second Visit

PrisonIsland

Map of Prison Island during the second visit

Landmarks GF

Locations GF

Locations 1F

Locations 2F

Landmarks 3F

Locations 3F

Locations 4F

Landmarks 5F

Locations 5F

Landmarks 6F

Enemies

First Visit

Second Visit

Unique Monsters

Heart-to-Hearts

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