Seek-a-boo 是一種以遊戲治療為出發點的產品。自閉症兒童在學齡前容易出現躲避人群的行為影響學習，為提高學習能力，透過遊戲代替語言作為溝通的橋樑。在遊戲過程中，兒童透過積木造型認識交通工具，並在組裝過程中訓練手部能力與其辨識能力。 We designed Seek-a-boo as a treatment-aiding method based on gaming processes. Our target group, autistic adolescents, tend to avoid people before reaching school age and therefore exposed to learning difficulties. In order to help rebuilding their learning ability, our design aims to use games as a replacement for verbal communication. In the proposed gaming processes, autistic adolescents are guided to identify transportation vehicles, thus improving their identification capability while getting concrete hand-on exercises.