Pokemon or other turn based games that were originally designed for portables usually work great for a commute! Also monster hunter, I played a lot of that on the subway back in the day on my 3DS. Thr PSP games might be easy to emulate.
I've been replaying Link's Awakening on my phone using a gbc emulator, you could try that. I've also just found Winlator so I might start also playing Sam and Max, you might see if those point you in any directions.
+1 towards turn-based games for your commute, keeps it easy to still be engaged with everything around you so you don't miss a stop or something. i really love the Mystery Dungeon games, which are roguelikes in the literal sense that they're procedurally generated dungeon crawlers where you start from scratch (or scratch-ish depending on how beginner friendly the title) when you die. the pokémon spinoffs are the most well known but there have been a lot of crossovers with other series as well as a line of completely original games called Shiren the Wanderer
i also have to mention Densha De Go, not because they would be particularly feasible but c'mon. don't you wanna drive a train while riding a train? it's real-er than VR!
You could try Heroes of Might and Magic 3 on an Android Phone with VCMI App installed. Requires that you purchase Heroes 3 from gog.com. Runs pretty well, but there are some elements that are pretty small. Ideally you are familiar with the game or similar games because it has some complexity.
I just did a playthrough of Earthbound on my retro handheld that had the Maternalbound rom hack installed. It's a cliche choice but super wonderful none the less
Pretty much any console that your phone can emulate is an option. That gives you your pick of whatever consoles and genres you like within the capabilities of your phone basically.
gonna throw out my favorite. shadowrun on the genesis. can't save at any point like while under attack or in the middle of a matrix run but you can save often and it works out good.