I work on the very small team that develops the X-Plane flight simulator. We’re kind of on the periphery of game dev, but I can assure you, work is not crazy for us.
I was responsible for rewriting the UI more or less from scratch for the most recent major version, and at the height of “crunch time” leading up to the release, I worked maybe 50 hours a week... and most of that was voluntary, because, though I had the option to cut features to make the deadline, I really wanted to get stuff in.