Now though, I play Fate: Grand Order semi regularly. I was going to quit because it didn't have autoplay but the game very kindly gave me Altria Pendragon (The game's version of King Arthur who was really prominent in the anime). I can't quit now that I have the unit. I hear that the story gets good too
These days though, I mostly just pop in for a move or two over at https://www.chess.com/ throughout the day.
However, whenever I'm on my phone in Tokyo, it's usually because I'm on a train holding on to a hand strap. Thus, I usually only have one hand free and it isn't that easy to play chrono trigger with one hand. So most of my phone gaming is actually with visual novels where all you have to do is read and touch the screen. One very good visual novel on mobile (if you like the genre) is "If My Heart Had Wings". It's not a dating sim. However....if you dig deep enough you'll learn that the original Japanese version was an ...erotic visual novel. But the international version isn't!!! I swear!
The story is actually pretty deep and the soundtrack is great.
If you like VNs, this one is worth buying. Check it out here:
https://play.google.com/store/apps/details?id=jp.co.mediac3.imh&hl=en_CA&gl=US