Background: Out-of-hospital cardiac arrests (OHCAs) predominantly occur in residential settings, often witnessed by children who could act as first responders. The World Health Organization (WHO) supports the Kids Save Lives (KSL) initiative, recommending basic life support (BLS) training for children aged ≥11 years. However, disparities in BLS education persist globally, particularly in low-resource regions where socioeconomic barriers, such as school type, malnutrition, and limited infrastructure, hinder implementation. Younger children (aged <11 years) face additional challenges due to physical limitations (eg, height, weight, and grip strength), which may compromise their ability to achieve adequate chest compression depth. While gamified learning has shown promise in improving BLS engagement and skill acquisition, its efficacy across diverse socioeconomic groups remains understudied.