Steampunk

Steampunk is both science and speculative fiction set in a real or fictional era where steam power is still used, typically the 19th century (1801 – 1900) and Victorian era (1837 - 1901). Elements of fantasy are often used alongside both fictional technological inventions and real technological developments, such as the computer occurring at an earlier date. Alternate history-style presentations of technology like dirigibles, analog computers, or digital mechanical computers are commonplace and presented in an idealized light or with a presumption of functionality.

Sub-themes
	Dieselpunk	Set in an era or world where diesel-based technology is the primary power source. It is typically set somewhere between 1918 to the 1950s with retro-futuristic aesthetics and postmodern sensibilities. Dieselpunk is sometimes divided into two themes or styles: Ottensian and Piecraftian. "Piecraftian" focuses on the aesthetics of the world wars and speculates on how human culture could cease to evolve due to constant, widespread warfare. "Ottensian" has a positive vision of technology, where humans continue to evolve unhindered by war or economic collapse.	Example: BioShock Iron Harvest
	Solarpunk	Set in an era or world where the primary power source is renewable energy. Sustainable, eco-friendly technology is present alongside less advanced ways to reduce carbon emissions, such as gardening. Nature motifs that are highly ornamental, ecological, and sustainable are used extensively. Where similar genre's tend to emphasize how things can go wrong, solarpunk imagines how things can get better.	Example:

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