In curriculum 2013, the learning activities is expected to create fun and challenging conditions, and students are required to be able to solve problems. One of alternatives that can be use is by developing educative games that can be used to improve problem solving skills of students.The aims of this study were to describe the theoretic feasibility of Wonderful Step game theoretically based on the criteria of concept, linguistic, presentation, and education game requirements as well as empiric feasibility, namely based on student responses and problem solving skills.This research used Research and Development (R & D) method. Data were collected by using questionnaires, namely validation questionnaire and students’ response questionnaire as well as tests of problem solving skills. This limited implementation is performed in VII-H of 26 Junior High School. The result of this research showed that the Wonderful Step game is feasible theoretically with an average score of 98.44% (excellent). And also feasible empirically based on the students’ response and results of problem solving skill test. The students’ response Wonderful Step game is 98.33% (excellent). While problem solving skills test showed that the classical mastery of students is 90% (very good) with an average value of student for about 86.35. These indicates that Wonderful Step can be used as media in the topic of Global Warming, to improve the students motivation, as well as to improve the problem solving skills of the students. Keywords: educative game, Wonderful Step, problem solving skills, topic of Global Warming.