Gaze visualizations hold the potential to facilitate usability studies of interactive systems. However, visual gaze analysis in threedimensional virtual environments still lacks methods and techniques for aggregating attentional representations. We propose three novel gaze visualizations for the application in such environments: projected, object-based, and surface-based attentional maps. These techniques provide an overview of how visual attention is distributed across a scene, among different models, and across a model's surface. Two user studies conducted among eye tracking and visualization experts approve the high value of these techniques for the fast evaluation of eye tracking studies in virtual environments. Categories and Subject Descriptors H.5.1 [Multimedia Information Systems]: Evaluation/ methodology - Information Interfaces and Presentation General Terms Design, Experimentation Keywords Gaze visualizations, eye tracking, attentional map, eye movements, virtual envir...