1. The document summarizes three recent studies on the effectiveness of game-based learning. 2. The studies involved students in business, economics, and management courses and compared test scores between students who used games for learning and those who did not. 3. The results showed that students who used games consistently outperformed those who did not, with higher percentages scoring As and no students failing compared to some failures in the non-game groups. The studies suggest that game-based learning can improve academic achievement.