This document presents a theatrical discussion game exploring the topic of nanotechnologies. This is a new format produced specifically by and for the NanOpinion project. It uses the techniques of theatrical debate. The game is aimed at informal semi-public settings, where passers-by can participate without spending too much time. Participants get a chance to learn, explore and debate on the controversial issues around nanotechnologies. The game touches safety, regulation, ethical and health issues.