The game – a so called 'puzzle platformer' or 'adventure game' – is the most important element, but music plays an extremely important role. That is because the story is brought in the form of a rock opera.

An all-star cast steps into the shoes of the game's characters and brings the story singing. This cast for instance includes:
Simone Simons (Epica)
Dani Filth (Cradle of Filth)
Marc Hudson (Dragonforce)
Tony Kakko (Sonata Arctica)
Alissa White-Gluz (Arch Enemy)

The musical accompaniment is provided by the Metropole Orkest (the world's biggest professional pop and jazz orchestra) and band members of Epica, Textures and Within Temptation.

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