Agreed. It doesn’t takethe DMCA into account (which, for video games, is kinda not relevant for new games — I hope).
Copyright law, per se, is very old. My point is that it does a good job of laying out the basics. If you avoid those pitfalls there is a VERY good chance you won’t ever need to call a lawyer. Trust me, the last words you ever want to utter is, “Hey, I need a lawyer. Do you have someone you can recommend?”