This report provides a detailed summary of a United Nations Development Programme (UNDP) exploratory Case Study (GCS1), conducted as part of the EU Horizon-funded Games Realising Effective and Affective Transformation (GREAT) project. UNDP1 Case Study (GCS1) is the first in a series of eight that are undertaken by the project team, engaging with authentic policy stakeholders. Each case study iteratively contributes to the refinement of GREAT case study documentation, research methodology and overall design. GCS1 started in December 2023 and was finalised in March 2024, involving the case study sponsor UNDP, and the GREAT project research team, coordinated by The Leibniz Institute for Research and Information in Education (DIPF). This exploratory study adopted the GREAT case study cycle design (figure 1.0), representing an eight-stage process of inquiry underpinned by an established mixed-methods research (MMR) methodology.