EICS is an international conference devoted to the engineering of usable and effective interactive computing systems. Systems of interest include traditional workstation-based interactive systems, new and emerging modalities (e.g., gesture), entertaining applications (e.g., mobile and ubiquitous games) and development methods (e.g., extreme programming). EICS focuses on methods and techniques, and the tools that support them, for designing and developing interactive systems. It brings together people who study or practice the engineering of interactive systems, drawing from the HCI, Software Engineering, Requirements Engineering, CSCW, Ubiquitous / Pervasive Systems and Game Development communities.