Invasion


 * 'Infiltration' redirects here. For other uses, see Infiltration (disambiguation).

Invasion (called Infiltration on the Revival disc) is Disc 1, Track 18 on the Xenogears Original Soundtrack and track 19 on the Xenogears Original Soundtrack Revival Disc -the first and the last-. It is one of the tracks playable in the Nortune jukebox, under the options 'The World' and 'Emotion'.

It plays as the area music in the following areas: It also plays in the following cutscenes:
 * Nortune (except for the Battling Champ's room and Kaiser Sigmund's rooms)
 * The Bledavik waterway
 * Fatima Castle before the party reaches Nisan
 * The land-dwellers' quarters areas in Solaris
 * Krelian's lab until the room with Opiomorph
 * In Solaris after Citan removes the party's limiters
 * The first Anima Relic dungeon (until the party reaches the bottom floor)
 * Bart and his crew prepare to capture Shakhan after entering Fatima Castle through the waterway.
 * Fei meets in Nortune.
 * Fei and Rico temporarily part ways after leaving the D-Block sewers.
 * Hammer lets the party know about the Goliath.
 * The party looks over Nisan, which is currently overtaken by Shakhan's soldiers.