The dramatically changing availability and sharing of information online has created new opportunities for informal, discretionary learning. This, along with the rise in online gaming across all ages and genders, gives rise to questions about how these resources can be used effectively for teaching. In my work, I examine the efficacy of an online debugging game designed to teach computer programming. More specifically, in addition to developing the game and its learning objectives, I investigate how the inclusion of new features and the manipulation of specific elements within the game affects people's motivation and learning of computer programming and debugging concepts.