In this article, I argue that a ‘situated-portable epistemic nexus’ characterizes postwar urban peacebuilding. The concept captures how knowledge in urban peacebuilding is produced by/productive of discursive and material conditions that are both, and simultaneously, situated in a particular urban environment and transnationally emergent and circulating. I illustrate this argument in an analysis of an urban peacebuilding project in postwar Pristina, Kosovo, that relied on the computer game Minecraft as the main technology. Despite a heterogeneous group of actors involved, and a primacy devoted to local perspectives, the at-once-situated and globally portable discourses, technologies and artefacts of the Pristina project conditioned the production of a relatively narrow urban knowledge and space that formed around a purely visual conception of the urban – overall limiting what the situated urban was and could become.