Half Life 2, I got a new laptop a couple of years ago and it was the first that could actually play it properly but I never got to it, then the big update came out and wow, so worth it, loving it.
TES IV Oblivion. Love it, so silly, I love thieving.
Autonauts vs Piratebots, such a fun and cute little programming game.
Vibes are great. You can still hear people talk, appreciate music, and have awareness of things around you, but it is all down by a sizable number of decibels. They are also comfortable and don’t make the blocked ear feeling.
https://www.discovervibes.com/
I also like using TWS headphones with foam tips. I have SoundLiberty 79s and they are great, put some good foam tips on them and they act at earplugs as well. Maybe not as useful for your situation but maybe good for other times. The SoundLiberty 79s are not sold any more, not sure about a good replacement.