Abstract
The purpose of this article is to provide insight into how to design game-based learning. In the 21st century learning focuses on the process of skills in applying materials using technology, and collaborating. Mathematics learning is learning that requires students to not only memorize and read but also be directly involved in the process of finding concepts. Learning media is an alternative to creating interactive and fun learning. In this study the research design adaptation of the multimedia development research model: Decide, Design, Development and Evaluation (DDD-E). The results of this study are in the form of conceptual and procedural models of steps in developing game-based learning for mathematics subjects using the DDD-E model design.