This article describes the development of a web-based 3D simulation of an engineering workshop in refrigeration plant maintenance and the challenge of moving the application from a knowledge and skills acquisition model to a problem-solving edugame model across a range of possible scenarios within the restrictions of an academic programme’s learning outcomes. The 3D simulation workshop is described together with its real-world equivalent. The limitations of the app. simulation in engaging students in complex problem-solving are described together with the search for learning design theories to inform further development of the app. as a multi-level, scenario-based edugame. The article ends with an indication of the proposed collaborative process to further develop the app. by taking close cognisance of appropriate learning and gaming theories.