I finally got around to trying out No Man’s Sky a few weeks ago. I started on a super-hot planet, where you need to find shelter and/or resources to recharge your suit’s hazard protection system to keep cool. Got killed a few times trying to figure out what I was doing. And after about 20 minutes, my computer spontaneously shut itself down.
I waited a few minutes to let it cool down, then tried again. Managed to figure out a bit more of what I needed to do in the game, and then the same thing happened.