Only one I still play occasionally:
Pixel roguelike RPG. Intriguing dungeon, crazy weapons, and endless adventure.
play.google.com
These I used to have on my phone:
Zen but challenging game for perfectionist minds.
play.google.com
Become a great Gold Digger Tycoon and get cash in this clicker adventure game.
play.google.com
Clash Royale is a real-time, head-to-head battle game set in the Clash Universe.
play.google.com
And then if you have ever played runescape:
Explore Gielinor in the iconic MMORPG now on Mobile!
play.google.com
The only reason I don't play OSRS anymore is because the membership fees are just way too high ($11/month). The F2P experience is good though and will get you a good month or two of play time at least. It is a grinding game.