The Caligula Effect: Overdose - Digital Soundtrack includes 13 tracks + 6 bonus tracks!

1 Peter Pan Syndrome by Kagi-P (40ｍP)
2 Tokimeki*Riberie by Sweet-P (OSTER project)
3 Dokusousei Incident by Shonen-doll (PolyphonicBranch)
4 Sadistic Queen by Mirei (cyoucyo-P)
5 Tenshi No Uta by Ike-P (Asa)

6 sin by Shadow Knife (164)
7 Cosmo Dancer by Wicked (YM)
8 Distorted † Happiness by Thorn (cosMo@Bousou-P)
9 Orbit by Mikito-P
10 Love Scope by Stork (DECO*27)

11 Onboro by Kuchinashi (Pinocchio-P)
12 Suicide Prototype by Lucid (Utsu-P)
13 Veritas by Mikito-P

Bonus tracks

1 Tokimeki*Riberie (TRMX)
2 Dokusousei Incident (TRMX)
3 Tenshi no uta (TRMX)
4 Cosmo×Queen (TRMX)
5 Love Scope (TRMX)
6 Onboro (TRMX)