An e-learning system provides learning content and interactive learning games to users using computer. The e-learning system includes an authoring system allowing the creation of customized learning content and interactive learning games. A content presentation module presents learning content to users. A data collection module receives user data indicating the user's performance with the interactive games. A user data presentation module analyzes the user data and presents a report including user data. The data presentation module may also present rankings of user data for interactive games. The interactive learning games are designed to reinforce and measure users' understanding of the instructional content provided by the content presentation module. While playing interactive games, access to corresponding instructional material can be enabled to enhance users' retention or disabled to assess users' knowledge. Open games can be used to calibrate user responses to model responses and to aggregate and evaluate users' suggestions.