The GameForGreen project aims to solve the growing global need for reducing household and organisational CO2 emissions through democratic involvement and sustainable consumption. The development of an innovative digital game platform aims to enable consultants, municipalities, companies and organisations to develop and distribute serious games that teach sustainable behaviour to e.g. households, public institutions, housing associations, or employees. Game creators can create games that enable players to choose actions, see their environmental impact, and receive a score based in their consumption practice. The project collaborators include global digital game developer Actee, prominent researchers from Roskilde University, 3 municipalities, sustainability consultants, HOFOR as a utility provider and Implement as a consultant company. The GameForGreen will collect data from the games on the platform and compare these to quantitative real-world data on player consumption of resources collected through ethnographic studies. The data will be fed back to the platform through unique data-compilation, machine learning, artificial intelligence, and data analytics to explore which game elements can lead to a desirable changed behaviour. GameForGreen will enable new business models for Actee with an influx of customers to their ecosystem. On a societal level, GameForGreen will bridge between regulators and target demographics by teaching households sustainable consumption behaviour.