This document provides an introduction to game based learning through a preface and overview of the GAMEiT handbook. The preface discusses how games have long been used for both leisure and serious purposes like practicing strategies. It notes growing interest in using games for education but also challenges, like lack of teacher experience and resources. The handbook aims to identify and share good practices in game based learning. The overview previews the chapters, which explore topics like global conflicts simulation games, using commercial games like Rome Total War for history lessons, and developing a medication calculation game for nursing students. The goal is to illustrate diverse approaches to incorporating games and game elements into education.