Playability as Extension of Quality in Use in Video Games

The quality of a software product is a main objective that every interactive system should aspire. There are many challenges to achieve this quality that require a previous characterization to ensure it. The International Standards Quality Models help to characterize the quality of a software system. But, there are some products that present „special‟ quality requirements. In this paper we focus on special interactive systems: Video Games, whose quality requirements are different than traditional software. This additional dimension is called „Playability‟. In this paper, an extension of Quality in use Model for Playability decomposition (PQM) is introduced. In our playability quality model metrics are also considered and interpreted. Finally, we review different usability evaluation methods in order to identify what are the best evaluation methods for supporting playability evaluation tasks.