I play a lot of windowed games on my PC as I watch less engaging content like TV I’ve seen, Youtube. Lately Balatro, Peglin, a racing game called art of rally, Mini Motorways. Interested to hear other people’s preferences.
I generally want something that runs well windowed because I use a third of my ultrawide to run the video, so no shooters or “big” games usually.
Smash Karts is a lot of fun, it’s pretty much online Mario Kart deathmatches! There’s also capture the flag, hat holder, and a few other games layered in too. Worth a try the next time you want to game along side a boringish video.
Edit: Here’s a link