Project: Jotunnheim is a collaborative fictional-world project focused on building a historically and linguistically detailed steampunk setting. Created in 2021, it has grown into a community-edited MediaWiki with hundreds of articles covering the world’s history, cultures, languages, nations, and technologies. Its imagined modern era draws comparisons with Earth between the First World War and the interwar period, while technological development varies across the setting.

The site serves as an extensive reference library and creative workspace rather than a commercial brand. Readers can explore introductory material, human history, wars, countries and dependencies, calendars, language families, and dialects. Further articles cover astronomy, geography, flora and fauna, religions, political systems, sports, military affairs, notable people, companies, firearms, tanks, and other vehicles. It also provides community-oriented wiki features, including recent changes, discussion pages, source histories, and tools for contributing or importing files. Together, these resources support the collaborative development and exploration of Jotunnheim’s fictional societies and their interconnected histories.