I've tried Clash of Clans but I never could really get into it, and my friend tried to get me into Hearthstone which is a deck building type game, but with the extensiveness and constant updates to that game you can easily get outdated and outplayed just because you're not glued to the game like others, so it was kinda disappointing to say the least. I've tried management simulators and life simulators for the heck of it like Life Simulator and just recently, BitLife. MMA Manager and Movie Mogul I've also done but these are all games that once you beat them, have little to no replay value. New Star Soccer was a fun game to play as well, until again you beat it but that game was definitely fun!
Honestly the only games I play now are PubG on occasion with friends, OSRS, Risk with the wife and friends (we'll cast it onto the TV though, so I guess in a way it's not truly mobile lol), and WSOP whenever I have the itch for gambling haha (not real money of course). Even OSRS I prefer playing on the PC then the mobile though.