This talk emerges from an AHRC Follow on Funded project (Steampunk Sherlock Holmes) which created a large-scale Minecraft map of Victorian London working in partnership with Minecraft designers, Blockworks. To do this the academics (Sally Bushell and Rebecca Hutcheon) had to develop a process to embed Sherlock Holmes’s narratives into the build using various mapping tools and late 19th Century maps. In the first half of the talk they describe this process in detail and show the developing build at different stages. In the second half they consider some of the research questions and issues that arose from making it.