i don't know much about the best ones but i do know some underrated but really good ones. Find them at exp game app. Games like dragon heroes, demons hunter, conquer age

I would highly recommend Clash of Clans and Starwars Commander for Android.

Clash of Clans

https://play.google.com/store/apps/details?id=com.supercell.clashofclans

Starwars Commander

https://play.google.com/store/apps/details?id=com.lucasarts.starts_goo