This presentation offers a behind-the-scenes look at the Mzansi Climate Justice! Game Jam, a hybrid collaborative game co-creation project that connected participants across the Netherlands and South Africa to collectively envision climate futures grounded on local realities. While game jams are best known for their short-sprint, competitive format, often gatekept by the expectation of a game design or development background, the project deliberately “modded” that structure. This game jam reimagined them as open platforms for challenging dominant narratives through games. Unfolding over one month across four sessions, each framed through game studies scholarship, critical play methodologies, and climate justice frameworks, the project equipped participants with a shared language and toolset to co-create their own stories. Drawing on this experience, the presentation reflects on what game jams can be and how their bounded, constraint-driven format can offer a productive setting for interdisciplinary exchange. This includes bringing together scholars, activists, industry professionals, and broader publics in ways that subvert conventional expectations of game-making.