Not to imply that kid games cannot be just as good as game for adults, but in most cases, they really aren’t. Challenge can often be dialed back and the story made ultra simple (go save that maiden!) but some kid’s games go out of their way to make sure they appeal to all demographics and not just kids.
The following six video games are pretty awesome no matter what your age is, with a HUGE shout out to the Lego game franchise. I have beaten those games with kids and adults alike and they are pure joy, no matter how old you are.