Feedback in low vs. high fidelity visuals for game prototypes

Prototypes have proven to be a good practice in different areas. In the gaming industry, they help identify usability and gameplay issues, among others. The earlier these issues are identified, the less effort is required fixing them. But game assets like graphics are often expensive and are available later on, or even after game functionality has been implemented. Game prototypes are in this case created using lower fidelity visuals. While this technique makes it possible to perform usability tests, it may bias the feedback provided by usability testers. In this paper we investigate how the fidelity of the prototypes used for usability testing influence the feedback provided by testers.