Mobile Application of Mental Arithmetic Fun Learning (MAMAFuL) is an education together with entertainment games. It is about mental arithmetic learning. It consists of two levels, which are learning mode and challenge mode. In learning mode, some theories are teaching before players enter the questions session or else players can just skip it. After answer all the questions, players need to sit a test. If players pass the test, the next level will be unlocked else players need to answer again the questions. The higher the level, the questions will be more difficult and challenging. In the challenge mode, players need to answer the questions in a limit time to hit the target score. As the target score is hit, players can switch to the next level which has the higher target score. If the player stuck while answering the questions, player can ask for help by tap on the help button. However, player can only ask for help until three times. Besides, after passing every two levels in challenge mode, there have one mini game for the users to gain “lives” and continue to the next level.