Demons' Score was a rhythm game developed by iNiS and published by Square Enix for iOS and Android.

The gameplay is similar to another iNiS-developed game, Elite Beat Agents.

[4][5] Serenity is just an average college girl, but when she suddenly loses contact with her father, Dr. Alister, she sets out to find him at the Salem State Hospital & Asylum where he works.

Stepping warily into the shattered ruins, she meets a talking teddy bear.

Introducing himself as David, the talking teddy bear claims to have once been human, but when Serenity asks him about her father's whereabouts, countless demons suddenly appear.