In our extensive literature review, we note the promise of organized ECA and CCA as an intervention to alleviate MF (Mental Fatigue) among Indian secondary school-going children. Given the presence of a game-changing NEP 2020 and Khelo India Mission, this research contributes to filling the gap by giving comparative empirical evidence from playing game types. Following a cross‐sectional static group comparison design, the study is conducted using stratified random sampling of 600 class‐IX and X students studying in CBSE, ICSE and Uttar Pradesh state board schools within Meerut district. Using standardised psychometric measures in the form of Mangal EIS, Bhargav MFS and overall Academic Performance Index (in terms of percentage), the study elicited some interesting information. The obtained findings indicate that individuals studying ECA are less mentally fatigued (tend to "feel" less), and on the other hand, they have a more developed emotional sphere than CCA members/ non-members. On one side, association with CCA is positively spread more around GPA and performance, but on the other hand it has lower incremental intensity of mental fatigue than ECA. Correlation Analysis The result of the correlational analysis showed that mental fatigue is negatively associated with emotional maturity (r =-452) and academic performance. Radical was its lower scores significantly correlated with mental fatigue, while a high of 0.521 absolute value was its grades' correlation. The ECA trial indicated the efficacy of psycho-distance treatment of mental fatigue, 4 whereas CCA was not only utilised for facilitating cognitive performance during academic activities but also possibly for fatiguing. Conclusion: These findings provide powerful support for educators, policy makers,  and parents to intentionally infiltrate non-academic activities in the out-of-school world of high school as a way of elevating students' overall well-being, enjoined by national educational mandates.