Computer games have long been used for teaching. Current reviews lack categorization and analysis using learning models which would help instructors assess the usefulness of computer games. We divide the use of games into two classes: game playing and game development. We discuss the Input-Process-Outcome (IPO) model for the learning process when playing computer games. We also propose a new Input-Process-Outcome model for explaining the learning through game development (IPO-GD). Using both learning models, we review recent uses of computer games. Based on our review, we recommend: 1) using the IPO model when selecting games; 2) using the IPO-GD model for game development; and 3) creating support repositories for related curriculum material. (Contains 4 tables and 5 figures.)