Tragödie der Macht) is a 1920 German science fiction film about an alien from the planet Algol.

While working in the mine, he encounters an inhabitant of the planet Algol who gives him a prototype machine which can provide a virtually unlimited source of power.

Over the next year, Herne sets up a factory providing energy; however, instead of simply relieving workers of the difficult job of mining, the device creates massive economic upheaval throughout the world.

In a moment of realisation, Herne destroys the machine, thereby preventing his son from taking control after his death.

It was screened by The Museum of Modern Art on November 29, 2010, as part of their film exhibition Weimar Cinema, 1919–1933: Daydreams and Nightmares.