This study aimed to investigate the current state of education on the development of children's cooperative abilities via the use of themed role-playing games in Dak Lak, Vietnam. The period between March through June 2019 was devoted to administering an online survey for data collection. The findings indicate that preschools have devoted attention, effort, intellect, and time to developing primary students' collaboration abilities. Despite this, the findings are still relatively low and do not reflect the proportional number of participants. The youngsters aged 5 to 6 years old have shown that the measures benefit their ability to collaborate with others. The youngsters are more engaged in the activity, taking the initiative, and showing enthusiasm for interacting with one another. The experimental and control groups were quite different regarding their ability to collaborate effectively. In comparison to the youngsters in the control group, those in the experimental group demonstrated superior collaboration skills on a more consistent and regular basis.