The primary purpose of this research is to ascertain the opinions of the teachers who attended the in-service training of mind games arranged by the Ministry of National Education and conducted the mind games course. To achieve this goal, the answer to the question, "What are the reasons why teachers do or do not prefer mind games?" was sought. The research was designed with a survey model, which is one of the descriptive research designs. The data of the research was obtained with the help of the survey form titled "Teacher Opinion Survey for Mind Games Course" practiced to the teachers conducting the mind games course in Kayseri in the 2016-2017 academic year. Some of the results gained from the research show that the most popular reason for teachers to prefer mind games is to develop students' abilities. Also, one of the results of the research obtained from the research is the scarcity of mind games materials used in schools. In this sense, certain studies can be conducted to reduce the scarcity of this material in schools.