Depending on the age group, you could look at citations for disciplinary behavior

Increased self-esteem, stemming from tangible advances like this one: https://www.discovermagazine.com/planet-earth/computer-gamers-solve-problem-in-aids-research-that-puzzled-scientists-for-years

Moral competence maybe a interesting indicator to be measured. It refers to the ability to make decisions based upon moral values. The Moral Competence Test by Professor Georg Lind works fine: http://www.uni-konstanz.de/ag-moral/mut/mjt-engl.htm and helped me a lot in my Master Degree Thesis.

Thanks a lot! This is an original perspective.

Games should be adapted in different educational processes.

Nowadays, the games will be adopted for the different proposals of the contemporary life.