Gatekeepers Game Sound Tracks
| Composed by | Kouhei Tanaka |
| Published by | Pony Canyon / Scitron |
| Catalog number | PCCG-00522 |
| Release type | Game Soundtrack - Official Release |
| Format | 1 CD - 46 tracks |
| Release date | January 19, 2000 |
| Duration | 01:13:10 |
| Genres |
| 1 | Theme | 01:35 |  |
| 2 | Yearning | 01:31 | |
| 3 | Tranquility | 01:08 | |
| 4 | Advancing Army | 01:10 | |
| 5 | Ruriko | 01:17 | |
| 6 | Misao | 02:22 | |
| 7 | Kaoru | 01:23 | |
| 8 | Reiko | 02:24 | |
| 9 | Jun | 01:50 | |
| 10 | Fei | 01:50 | |
| 11 | Yukino | 02:00 | |
| 12 | Francine | 01:27 | |
| 13 | Emergency Takeoff | 01:28 | |
| 14 | Quiet March | 01:37 | |
| 15 | Reminiscence | 01:20 | |
| 16 | Invader | 00:49 | |
| 17 | The Approaching Terror | 01:30 | |
| 18 | The Zeromen of Shadow Mountain | 02:04 | |
| 19 | Victory | 01:30 | |
| 20 | Times of Decisive War | 01:27 | |
| 21 | Occult Power | 00:56 | |
| 22 | Romance | 01:25 | |
| 23 | Sadness | 01:26 | |
| 24 | Private - Tategami High School | 01:19 | |
| 25 | On the Southern Island... | 01:39 | |
| 26 | The Decisive Battle | 02:53 | |
| 27 | Despair | 01:48 | |
| 28 | A.E.G.I.S. | 01:20 | |
| 29 | A Sense of Duty | 01:27 | |
| 30 | Eyeglasses | 01:16 | |
| 31 | Loneliness | 01:21 | |
| 32 | Winter Sleep | 01:39 | |
| 33 | Darker Than Darkness, More Dazzling Than the Snows | 02:24 | |
| 34 | The People Not Yet Known | 00:26 | |
| 35 | As a Shield to Protect the Earth | 01:17 | |
| 36 | Like a Blue Hurricane | 00:55 | |
| 37 | Psychedelic de GOGO! (Instrumental) | 01:16 | |
| 38 | Now, the Graven Shadow of Destruction | 00:40 | |
| 39 | The Miracle is Always in My Hands | 01:29 | |
| 40 | The Soaring One Who Pierced the Heavens | 00:49 | |
| 41 | The Endless Calamity | 01:01 | |
| 42 | The Grotesque God Alights Upon the Earth | 01:09 | |
| 43 | One and the Same Future, One and the Same Life | 00:59 | |
| 44 | A Dream Scattered Amongst the Rubble | 02:23 | |
| 45 | And So, the Sunshine Gleams Once More | 01:08 | |
| 46 | Beach Memories ~End Title~ | 07:03 | |
