Workshop Series Towards Preference Marketplace Development IsaevSamet MakatsorisHarris GreenStephen CeschinFabrizio 2017 A series of workshops have been conducted to develop a digital crowdsourcing tool. Preference marketplace is inspired from traditional stock market and prediction markets. the aim of the proposed method is to engage consumers using game mechanics in order to aggregate large and diverse group of people`s opinion to identify the most promising new product ideas and concepts. First we conducted paper based workshops to collect feedback from users. Participants engagement were very good and their feedback was very positive. After that we developed digital platform and conducted another workshops in the digital environment in order to test performance and the limitations of the online software. A real food product case study was used for the workshop.