1 Main Title of Decoded
2 Emotion
3 Something Is Going On
4 Spy
5 The Theme of Decrypting
6 The Code of Purple
7 Meet in Private
8 Equation
9 Far Away
10 Unlock (Theme Song of Decoded)
11 Training
12 The Grievous News
13 Last Words of an Neng
14 Pursuit
15 Humor - Allegro
16 The Sad Melodica
17 Research
18 The Last Battle
19 Humor - Andante
20 Lose
21 Modern Emotion
22 Warm Emotion
23 Dramatic
24 War
25 Going In
26 Spy City
27 Suspense, Pt. 1
28 Suspense, Pt. 2
29 Long Way to Go
30 Young
31 Some Happiness
32 Humor, Pt. 1
33 More Happiness
34 Humor, Pt. 2
35 Plot, Pt. 1
36 Plot, Pt. 2
37 Plot, Pt. 3
38 Intense
39 Unlock (Instrumental)