Album was composed by Alexandr Golovko / Alexei Zakharov / Chris Hülsbeck / Natalia Yakovleva / Thomas Egeskov Petersen and was released on 2005. Soundtrack consists of 35 tracks tracks with duration over more than hour. Album was released by Egosoft.
Sounds like Ambient - that's what we can say about this album. CD 1
| 1 | Kyle Brennan: "Logbuch" | 00:12 |  |
| 2 | X³ - Reunion: Main Theme by N. Yakovleva, A. Zakharov | 04:30 | |
| 3 | Peace (Vocal) by N. Yakovleva, A. Zakharov | 02:07 | |
| 4 | X² - The Threat: Main Theme by T. E. Petersen | 04:04 | |
| 5 | Final Battle by A. Zakharov | 01:16 | |
| 6 | Julian Brennan: "Julians Philosophie" | 00:08 | |
| 7 | X-Tension Remix by A. Golovko | 02:11 | |
| 8 | X - Beyond The Frontier by C. Hülsbeck | 03:47 | |
| 9 | X² - The Threat: Intro Theme by T. E. Petersen | 01:19 | |
| 10 | Saya Kho: "Arbeitsteilung" | 00:06 | |
| 11 | Nikkonofune Approaching by T. E. Petersen | 00:53 | |
| 12 | Docking Theme by T. E. Petersen | 01:41 | |
| 13 | Saya Standing By by T. E. Petersen | 00:57 | |
| 14 | Julian Brennan: "Julians Checkliste" | 00:08 | |
| 15 | New Forces Arrive by N. Yakovleva, A. Zakharov | 02:24 | |
| 16 | Battle To The End by N. Yakovleva, A. Zakharov | 01:27 | |
| 17 | Attention: Target In Range by A. Zakharov | 02:32 | |
| 18 | Julian Brennan: "Murphy's Gesetz" | 00:07 | |
| 19 | Forsaken by A. Zakharov | 02:04 | |
| 20 | Entering The Pleasure Complex by A. Zakharov | 01:20 | |
| 21 | X-Tension by A. Golovko | 02:00 | |
| 22 | From Argon Prime To Kingdom End by A. Zakharov | 01:33 | |
| 23 | Julian Brennan: "Ein guter Ratschlag unter Freunden" | 00:06 | |
| 24 | Reunion (X Theme Remix) by A. Golovko | 04:44 | |
| 25 | X² - The Threat: The Chase by A. Zakharov | 02:02 | |
| 26 | Battle In Home Of Light by A. Zakharov | 01:11 | |
| 27 | Omicron Lyrae by T. E. Petersen | 01:28 | |
| 28 | Saya Kho: "Ein verlockendes Angebot" | 00:11 | |
| 29 | The Kha'ak Attack by A. Zakharov | 01:59 | |
| 30 | Building Your Empire by A. Zakharov | 01:19 | |
| 31 | Unlike (Original Chill) by A. Zakharov | 03:57 | |
| 32 | Julian Brennan: "Alles im grünen Bereich" | 00:11 | |
| 33 | Drums Of The Goner by A. Zakharov | 02:53 | |
| 34 | Every Victory Comes With A Price by N. Yakovleva, A. Zakharov | 00:22 | |
| 35 | X² - The Threat: Bret's Funeral by T. E. Petersen | 05:30 | |
