Mahjong!!!!!!!!
well the only mobile game I've played on for any length of time was Andor's Trail, it's a pretty ok dungeon & outdoors crawler
https://play.google.com/store/apps/d...pg.AndorsTrail
I've also heard good things about this other one so I may try it when I'm looking for more of the same:
https://play.google.com/store/apps/d...u.pixeldungeon