Abstract: This study aims to 1) To know the game of smart balls can improve the ability to speak 4-5 years old children in Harapan Mulia Family, Indrapuri Village, Tapung District. 2) To know the ability to speak 4-5 years old children in KB Harapan Mulia, Indrapuri Village, Tapung District can be improved through the game of smart balls. 3) To know the high percentage of ability to speak 4-5 y…