MUSH explores the emerging long-tail of community-building, or 'gangcrafting'. It is interested in the arcane, encrypted cultures flourishing among the recesses of an online megalopolis and reinforced by offline organisation and social balkanization. Maintaining fragile communities in platform-mediated circumstances means navigating: fluidly draconian Ts&Cs, gamified feedcrafting algorithms, algorithmic populism, misinformation, reality entrepreneurs, meme inception, and punitive control such as shadow-banning. While offline, the closure of many struggling urban venues as apparatuses of diverse community-building and public discourse, as well as the emergence of phenomena such as 'astroturfing', means that many communities seek and embrace alternative, private, or 'off-grid' spaces. From trust-based cryptoraves to sub rosa chat servers.