BUQs (Ubiquitous Electronic Lifeforms) is a swarm of autonomous, electronic lifeforms, communicating with each other, invading surfaces within the built environment and using them for the creation of sounds. Watch out for their invasion of urban infrastructures across the city. BUQs is the City Fictions data network: its alive, and it makes its own rules. BUQs translate interactions in the city from visual to auditory experiences. Through playful physical manifestations, these electronic creatures remind visitors of the constant presence of invisible technology in urban environments. The lifeforms invade surfaces within the city and use them for the creation of sounds, exploring it as an instrument through its material properties. BUQs, by Teun Verkerk & Joris Hoogeboom, was chosen as the winning submission of the ‘Ubiquitous Art and Sound’ open call of the ECAS network. ECAS is supported by the European Union within the Culture Programme. The project was developed in collaboration with TodaysArt, FutureEverything and Insomnia. The technical realisation was supported by the Science Centre Delft, Bekking Electronics Design and Karrenbeld Design. Presented as part of City Fictions, a speculative near future city. Institution: data network.