just starting this new thread my question is which platform is more popular to develop games and earn money

find lost alien very addictive android game https://play.google.com/store/apps/details?id=com.iaap4u.Alienjumper

what about this game 'Lost alien' new game. I played it and very addicting. here is the link https://play.google.com/store/apps/details?id=com.iaap4u.Alienjumper