This article presents an approach to user testing of mobile game-based learning (mGBL) applications by adapting four testing components: Game Usability, Mobility, Playability, and Learning Content. Each of the components represents the issues to be considered and evaluated for a mGBL. Therefore, the testing will know whether mGBL applications are well met each those needs of the components. 20 users were selected to play three different mGBL applications, and then they tested the game by completing testing forms. Users need to indicate whether each mGBL application met the need for each testing components. The findings show that users successfully played and completed all testing forms. The study provides intensive review of mGBL characteristics that can be useful and may be of interest to game developers.