一款由 SQUARE ENIX 创新的音乐动作类游戏，游戏采用虚幻 3 引擎开发，本作号称音乐与战斗相融合的全新节奏型动作游戏，全 3D 高清制作将带来爽快的战斗体验。而游戏主人公是少女塞里尼提，为了寻找失踪的父亲，小姑娘毅然决然的进入父亲的研究所，却在意外情况下发现了有恶魔之力依附的神秘道具恶魔之痕，机缘巧合之下。我们的主角只能抵御不断来袭的魔物，继续寻找他苦命父亲的探险之旅了。

■ Game Features
• Break beat action in which you battle demons in time to the rhythm.
• Stunning graphics driven by the Unreal Engine.
• Thrilling battle scenes and a story that sucks you in.
• Fierce battles with boss demons, all portrayed using dramatic camerawork. 

• Once you complete a stage in Story mode, you can purchase the powers of boss demons that you defeated.
• You can change the demon powers Serenity controls by having different demons possess her.
• Having different demons possess Serenity expands gameplay and battle scenes.
• Serenity's costumes change according to the demon that is possessing her.
• Abilities, voices, and special attacks vary by the possessing demon.
• Satan's (US$9.99) difficulty level soared up!
With severe survival conditions, you can enjoy the game even more stoically.
• Helpful items are also available in case you get stuck.

• Enjoy two game modes: Story Mode and Free Mode.
• Select the difficulty level you want to play. Easy, Normal, and Hard are available, but to enjoy the entire story, you have to... (You'll just have play to find out!)
• Your scores in Free Mode can be sent to the online rankings at the Game Center.
• Saved data can be synced with iCloud.
* Your Soul Eaters (a special item) are not stored on iCloud.
* You must be running iOS 5.0 or later to use iCloud.

版本 1.0.2 中的新功能

Changes have been made to the App Store screenshots.