The alternative title to her classic novel "Frankenstein" is "The Modern Prometheus".
The first edition was published anonymously in London in 1818. Shelley's name appears on the revised third edition, published in 1831. The title of the novel refers to a scientist, Victor Frankenstein, who learns how to create life and creates a being in the likeness of man, but larger than average and more powerful.
In modern popular culture, people have tended to refer to the Creature as "Frankenstein" (especially in films since 1931), despite this being the name of the scientist. Frankenstein is a novel infused with some elements of the Gothic novel and the Romantic movement.
It was also a warning against the "over-reaching" of modern man and the Industrial Revolution, alluded to in the novel's subtitle, The Modern Prometheus.
https://en.wikipedia.org/wiki/Frankenstein