Siren: Blood Curse is a survival horror stealth game developed by Project Siren, a development team of Japan Studio, and published by Sony Computer Entertainment for the PlayStation 3. The third and final installment in the Siren series, Blood Curse was released in July 2008 in Japan and on the PlayStation Store in North America and PAL regions. It was released in October 2008 in Australia and Europe and in December on the PlayStation Store in Japan.

Siren, known as Forbidden Siren in the PAL region, is a 2003 survival horror stealth video game developed by Project Siren, a development team within Japan Studio, and published by Sony Computer Entertainment for the PlayStation 2. It was originally released in Japan in November 6, 2003, and in other regions between March and April of the following year.