Anxiety, uncertainty and lack of control are all experiences reported by young people who responded to surveys about the immediate impacts of the COVID-19 crisis (Holmes et al., 2020). Our own consultations with 14-to 25-year-olds in Europe and Africa go further, to indicate that young people worry about the health and well-being of loved ones and are anxious about their own and their families' financial situations. Critically, many young people do not trust their government leaders to make decisions on their behalf during this time, and they experience deep anxieties around the broader impacts of this crisis on communities, countries and the world, as recession and nationalist impulses rise up around them.

It is becoming increasingly clear that the field of empirical bioethics requires methodological innovations that can keep up with the scale and pace of contemporary research in health and medicine. With that in mind, we have recently argued for Design Bioethicsthe use of purpose-built, engineered research tools that allow researchers to investigate moral decision-making in ways that are embodied and contextualized. In this paper, we outline the development, testing and implementation of a novel prototype tool in the Design Bioethics Workshop-with each step illustrated with collected data. Titled 'Tracing Tomorrow' (www.tracingtomorrow.org), the tool is a narrative game to investigate young people's values and preferences in the context of digital phenotyping for mental health.The process involved (1) Working with young people to discover, validate and define the morally relevant cases or problems, (2) Building and testing the game concept in collaboration with relevant groups and game developers, (3) Developing prototypes that were tested and iterated in partnership with groups of young people and game developers and (4) Disseminating the game to young people to collect data to investigate research questions. We argue that Design Bioethics yields tools that are relevant, representative and meaningful to target populations and provide improved data for bioethics analysis. Patient or Public Contribution:In planning and conducting this study, we consulted with young people from a diverse range of backgrounds, including the NeurOX Young People's Advisory Group, the What Lies Ahead Junior Researchers Team, Censuswide youth participants and young people from the Livity Youth Network.