First off, welcome! You’ll love the steam deck. I don’t have any specific hidden gems but if you’re planning on using this a lot on public transit, look for smaller games to play like Dredge. Anything too intensive will drain your battery a ton faster than a smaller game. Plus it will heat up and fans will be going bbrrrrrrr. May be worth getting a portable power bank if you can’t charge on transit. Also the largest SD card you can get to add to that puppy. Enjoy!

If you look closely you can still see the homeless encampments even back then