The game-based learning evaluation model (GEM): measuring the effectiveness of serious games using a standardised method

This article describes the background, design, and practical application of the game-based evaluation model (GEM). The aim of this evaluation model is to measure the effectiveness of serious games in a practical way. GEM contains the methodology and indicators to be measured in validation research. Measuring generic learning and design indicators makes it possible to apply GEM on multiple games. Results provide insight in the reasons why serious games are effective. This evidence will help serious gaming designers to improve their games. Three empirical studies based on various serious games applied in different contexts show how GEM can be practically used and how these studies have contributed to the improvement of GEM.