What to game right now : Fornite, Osu!, The Witness?

Depends on what kind of headspace you are in today. If you feel like just shooting stuff and hanging out with friends, fortnite is the obvious choice. It is pretty easy to jump into for a few matches without having to overthink anything, especially after a long day of work.

Now, if you want something that actually forces your brain to work, go with The Witness. I remember getting stuck on those puzzles for hours, it is super rewarding when it finally clicks but honestly, it can be pretty exhausting if you are already tired. osu! is basically a workout for your reflexes, so only fire that up if you want to get your adrenaline pumping or just listen to some good music while clicking circles.

Personally, when I want to unwind, I stick to fortnite. But if I want to feel like I actually accomplished something, The Witness is the way to go. Just dont burn yourself out on the puzzles, maybe mix it up a bit.