Karmaflow is a video game that has Cradle Of Filth and Dragon Force singing in it. It's the first game to be a Rock Opera. It is currently in Development by Ivo van Dijk. They are holding an Indiegogo Project and are running out of time. This interview is pretty amazing..he seems like such a great guy with such passion.

These aren’t nostalgia grabs or gimmick-laden throwbacks. They each bring something genuinely fresh to the table, mechanics that feel baked into the exploration and combat, not just tacked on.

Play as Dik, a nimble acrobat exploring the depths of Hell to rescue his brother from the Devil’s hands. With no weapons to rely on, success hinges on mastery of physics-driven movement, and quick adaptation to deadly obstacles.

GDC 2025 has revealed the finalists for the 27th annual Independent Games Festival (IGF).
You can't have a rock opera without Saviour Machine! Come on!
I wonder if anyone has told them they got the main character model from Journey.