C
- Canvas2
- Castle Fantasia
- Castle Fantasia 2 - Seima Taisen
- Castle Fantasia 3 - Erencia Wars
- Castle Fantasia: Seima Taisen
- Casual Romance Club
- Cat Girl Alliance
- Chain ~ The Lost Footprints
- Clover Heart's
- Comic Party
- Cosplay Fetish Academy
- Crescendo
- Cross Channel
- Cross Days
Read more about this topic: List Of Japanese Erotic Video Games