Supplementary data (exam scores raw data, exam score histograms, example quizzes and references).

Exam raw scores - Excel file - The intervention group of students (n=136) had a clinical data exam in January and then had the GEMstone Maze intervention in April and then had another clinical data exam in June. Their scores are listed for each anonymous candidate. The control group of students (n=126) had a clinical data exam in January and then had the GEMstone Maze intervention in April and then had another clinical data exam in June the year before when they were in the same year as the intervention group was in. E.g. they are the year above the intervention group. Their scores are listed for each anonymous candidate. Exam score histograms - Image files - Histogram for exam scores for 1 Control group January exam results and 2 Control group June exam results and 3 Intervention group January exam results and 4 Intervention group June exam results. Example quiz types - Image files. Immersive quiz - Mix and match - respiratory pathogens. Immersive quiz - Multiple choice - ECG (image references in separate word document). Hybrid quiz - ABG quiz. Offline quiz - CT heads quiz (image references in separate word document). Offline quiz - blood bottle sorting quiz.