Secret Game Original Soundtrack
| Composed by | Narucho / Satoru Kosaki / Shibayan |
| Arranged by | Keiichi Okabe / Shibayan |
| Published by | FLAT |
| Release type | Game Soundtrack - Promo / Enclosure |
| Format | 2 CD - 34 tracks |
| Release date | April 24, 2009 |
| Duration | 01:50:14 |
| Genres |
PS2 OP Theme "Secret Game"
written by Kusuji Isseki
composed by Satoru Kousaki
arranged by Keiichi Okabe
performed by YuNa
PC OP Theme "Torawarebito"
written by Kyouichi Teraduki (寺月恭一)
composed by Narucho
performed by YuNa
PC Ending Theme "Ouka Souren"
written by Kyouichi Teraduki
composed by Narucho
performed by YuNa
PS2 Ending Theme "Chitte, Saite"
written by Kusuji Isseki
composed & arranged by Shibayan
performed by YuNa
All Music by Shibayan & Narucho
written by Kusuji Isseki
composed by Satoru Kousaki
arranged by Keiichi Okabe
performed by YuNa
PC OP Theme "Torawarebito"
written by Kyouichi Teraduki (寺月恭一)
composed by Narucho
performed by YuNa
PC Ending Theme "Ouka Souren"
written by Kyouichi Teraduki
composed by Narucho
performed by YuNa
PS2 Ending Theme "Chitte, Saite"
written by Kusuji Isseki
composed & arranged by Shibayan
performed by YuNa
All Music by Shibayan & Narucho
| 1 | Hard-boiled | 02:02 |  |
| 2 | Enemy's sneaking | 02:09 | |
| 3 | No sound melody | 03:56 | |
| 4 | Shut Maze | 03:06 | |
| 5 | Pale Coloured rain | 02:33 | |
| 6 | Pale coloured river | 02:49 | |
| 7 | Immorality and ecstasy | 02:22 | |
| 8 | One o'clock midafternoon | 03:02 | |
| 9 | Combat prohibition | 01:57 | |
| 10 | Movement | 02:18 | |
| 11 | Kalbi vs beer | 02:16 | |
| 12 | lessing to this meet | 01:23 | |
| 13 | Recollection | 02:55 | |
| 14 | Breeze reaches | 01:39 | |
| 15 | Fragment of memories | 01:50 | |
| 16 | Tears | 03:17 | |
| 17 | Bright red rain | 02:41 | |
| 18 | Bright red river | 02:30 | |
| 19 | The dead' blessing | 02:53 | |
| 20 | March of infringement | 03:44 | |
| 21 | Only now | 03:37 | |
| 22 | Calling | 04:18 | |
| 23 | All head get over | 02:57 | |
| 24 | Clergy | 01:27 | |
| 25 | HEY YOU! | 03:21 | |
| 26 | Row of cherry blossoms | 01:45 | |
CD 2
| 1 | Secret Game | 04:39 | |
| 2 | Torawarebito | 04:29 | |
| 3 | Ouka Souren | 05:35 | |
| 4 | Chitte, Saite | 06:01 | |
| 5 | Secret Game -instrumental- | 04:39 | |
| 6 | Torawarebito -instrumental- | 04:29 | |
| 7 | Ouka Souren -instrumental- | 05:36 | |
| 8 | Chitte, Saite -instrumental- | 05:59 | |
