Ben Weedon from Serco Games Research presented on the challenge of measuring gameplay experience. He discussed how traditional usability metrics do not fully capture the experiential dimensions of games like fun and playability. Weedon suggested ethnographic research and diary studies adapted for mobile/casual games to provide quick feedback during development on issues related to context of use. The goal is to better understand general requirements for these new gaming areas and locate key issues through playtesting titles directly on users' devices.