Dieselpunk is science fiction that occurs between the two world wars, or takes place in a world where the 1940s never really ended. It’s often written deliberately pulpy and noirish, leaving character development in the dust of a wildly galloping plot. And fantasy elements are always welcome. For example, a gas-powered android could team up with a junkie psychic and a depressed vampire to solve the mystery of who’s sending all those severed limbs to the local police station.
Like steampunk, dieselpunk is often fan fiction for a specific era. It also tends to focuses on white Europeans and North Americans. Fortunately, there are small but growing movements called steamfunk and dieselfunk, which, in addition to having cool names, focus on non-whites actually having a place in the future and alternate histories.
For the world’s most thoughtful look at dieselpunk, check out Aja Romano’s Dieselpunk for Beginners.