Catechesis is a education that tells the Christians what they should believe. Many Christians know the need, but learning is tedious and teaching is difficult. Serious game in the field of education have both the intention of learning and an element of fun. In this study, I designed a educational serious game for Catechesis and implemented the game. The Heidelberg and Westminster Catechism were content. The key game play was to choose the correct answer by the touch. The effect was confirmed by the test users. The content of later study was planned. I hope this study can be well utilized to Church Educational System.