In this paper we describe CTArcade, a web application framework that seeks to engage users through game play resulting in the improvement of computational thinking (CT) skills. Our formative study indicates that CT skills are employed when children are asked to define strategies of common games such as Connect Four. In CTArcade, users can train their own virtual characters while playing games with it. Trained characters then play matches against other virtual characters. Based on reviewing the

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... atches played, users can improve their game character. A basic usability evaluation was performed on the system, which helped to define plans for improving CTArcade and assessing its design goals.