I. Introduction
Video games, in particular serious games, can improve learning and training across a variety of domains, including medicine, humanitarian, military, science, and education. Not only are video games engaging, but their potential for education is far reaching and under realized [1], [2]. In this paper, we describe the 18-month development of a 3D immersive serious game, called Heuristica, which was designed to improve specific aspects of players' decision making skills. Heuristica was built with the Unreal Engine 3, an award winning game engine commonly used by commercial entertainment game companies.