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In the governance of urban sustainability transformations, participatory futures practices are increasingly popular. Yet there is a rising awareness that the success or failure of these practices depends on how they are staged and the context in which they are conducted. These contextual factors are often less than ideal, and futures practices take place at the crossroads of many pre-determined agendas and priorities. We distinguish four factors that shape the effects of participatory futures practices: 1) how the institutional landscape constrains or enables a project aimed at urban sustainability transformations; 2) the participatory culture surrounding the project; 3) the project design; and 4) the futures methods applied. We assess these factors in three cities within the European H2020 IRIS Smart Cities project. In each city, project members participated in sessions where they designed citizen engagement using a futures methodology: the novel Scope and Ladder models. Each city reflects a different combination of the four contextual factors. We find that space for exploration and re-imagining can be found and optimized under imperfect conditions. Drawing on the results of the three cases, we conclude with a set of recommendations for the funders, project members and futures organizers of urban sustainability transformation projects.

The urban sustainability transformations that are urgently needed will have significant effects on the daily lives of city dwellers. As ways to imagine and co-design sustainable urban futures, experiments within the present-day urban environment are increasingly popular. This paper investigates how such an experimental approach can serve as the base of an applied urban futures game that enables its players to reflect on and imagine ways to address complex sustainability problems. We developed a large-scale mobile urban futures game, Utrecht2040, that provides its players with sustainability content, reflection, and motivation for action. The digital infrastructure of the game and large number of players provided unique opportunities for measuring outcomes. Our results indicate that this type of experimental gaming offers a new way for players to collect existing sustainable practices or 'seeds', and use them to collectively create glimpses into relevant sustainable urban futures. At the individual player level participants reported an increased understanding of sustainability and motivation to act. We conclude that large-scale collective experimental futures games in socio-spatial urban environments are a high-potential avenue for overcoming the "crisis of the imagination" by creating inclusive urban futures that inspire action.

The urban sustainability transformations that are urgently needed will have significant effects on the daily lives of city dwellers. As ways to imagine and co-design sustainable urban futures, experiments within the present-day urban environment are increasingly popular. This paper investigates how such an experimental approach can serve as the base of an applied urban futures game that enables its players to reflect on and imagine ways to address complex sustainability problems. We developed a large-scale mobile urban futures game, Utrecht2040, that provides its players with sustainability content, reflection, and motivation for action. The digital infrastructure of the game and large number of players provided unique opportunities for measuring outcomes. Our results indicate that this type of experimental gaming offers a new way for players to collect existing sustainable practices or 'seeds', and use them to collectively create glimpses into relevant sustainable urban futures. At the individual player level participants reported an increased understanding of sustainability and motivation to act. We conclude that large-scale collective experimental futures games in socio-spatial urban environments are a high-potential avenue for overcoming the "crisis of the imagination" by creating inclusive urban futures that inspire action.

Games offer unique possibilities for imagining and experimenting with new systems of governance for more sustainable futures – new rules and institutions, new roles, and new dynamic worlds. However, research on sustainability games has mostly investigated games as a type of futures method, largely divorced from its societal contexts. In this paper, we argue that to unlock the potential of gaming for anticipatory governance in the service of a more sustainable future, it is important take a whole-society perspective, and examine the possibilities and challenges offered by contextual factors. Using the Netherlands and Japan as examples, we investigate the following questions: 1) How do governance cultures allow or restrict opportunities for the participatory exploration of futures using games? 2) How does, and can, the game sector in a given context support anticipatory gaming? 3) How do dominant societal relationships with games limit, and offer opportunities for, gaming for anticipatory governance?

Future scenarios and pathways of potential development trajectories are powerful tools to assist with decision-making to address many sustainability challenges. Such scenarios play a major role in global environmental assessments (GEAs). Currently, however, scenarios in GEAs are mostly developed at the global level by experts and researchers, and locally imagined, bottom-up scenarios do not play a role in such assessments. In this paper, we argue that addressing future sustainability challenges for achieving more equitable development in GEAs requires a more explicit role for bottom-up inspired futures. To this end, this paper employs an innovative global assessment framework for exploring alternative futures that are grounded in local realities and existing practical actions, and that can be appropriately scaled to the required decision-making level. This framework was applied in the context of the UN's Global Environment Outlook 6, a major example of a GEA. We developed novel methods for synthesizing insights from a wide range of local practices and perspectives into global futures. We collected information from crowdsourcing platforms, outcomes of participatory workshops in different regions of the world, and an assessment of reported regional outlooks. We analysed these according to a framework also used by an integrated assessment model in the same GEA. We conclude that bottom-up approaches to identify and assess transformative solutions that envision future pathways towards greater sustainability significantly strengthen current GEA scenario-development approaches. They provide decision makers with required actionable information based on tangible synergistic solutions that have been tested on the ground. This work has revealed that there are significant opportunities for the integration of bottom-up knowledge and insights into GEAs, to make such assessments more salient and valuable to decision makers.

Over the last two decades researchers have come to understand much about the global challenges confronting human society (e.g. climate change; biodiversity loss; water, energy and food insecurity; poverty and widening social inequality). However, the extent to which research and policy efforts are succeeding in steering human societies towards more sustainable and just futures is unclear. Attention is increasingly turning towards better understanding how to navigate processes of social and institutional transformation to bring about more desirable trajectories of change in various sectors of human society. A major knowledge gap concerns understanding how transformations towards sustainability are conceptualised, understood and analysed. Limited existing scholarship on this topic is fragmented, sometimes overly deterministic, and weak in its capacity to critically analyse transformation processes which are inherently political and contested. This paper aims to advance understanding of transformations towards sustainability, recognising it as both a normative and an analytical concept. We firstly review existing concepts of transformation in global environmental change literature, and the role of governance in relation to it. We then propose a framework for understanding and critically analysing transformations towards sustainability based on the existing 'Earth System Governance' framework (Biermann et al., 2009). We then outline a research agenda, and argue that transdisciplinary research approaches and a key role for early career researchers are vital for pursuing this agenda. Finally, we argue that critical reflexivity among global environmental change scholars, both individually and collectively, will be important for developing innovative research on transformations towards sustainability to meaningfully contribute to policy and action over time.

Steering the EU food system towards a sustainability transformation requires a vast and actionable knowledge base available to a range of public and private actors. Few have captured this complexity by assessing food systems from a multi-dimensional and multi-level perspective, which would include (1) nutrition and diet, environmental and economic outcomes together with social equity dimensions and (2) system interactions across country, EU and global scales. This paper addresses this gap in food systems research and science communication by providing an integrated analytical approach and new ways to communicate this complexity outside science. Based on a transdisciplinary science approach with continuous stakeholder input, the EU Horizon2020 project 'Metrics, Models and Foresight for European SUStainable Food And Nutrition Security' (SUSFANS) developed a five-step process: Creating a participatory space; designing a conceptual framework of the EU food system; developing food system performance metrics; designing a modelling toolbox and developing a visualization tool. The Sustainable Food and Nutrition-Visualizer, designed to communicate complex policy change-impacts and trade-off questions, enables an informed debate about trade-offs associated with options for change among food system actors as well as in the policy making arena. The discussion highlights points for further research related to indicator development, reach of assessment models, participatory processes and obstacles in science communication.