A game can be made about anything with anything.
Yeah, I suppose you can make "ice cream" out of cowdung. Only 1. It won't be real, actual ice cream since it won't contain any ice . . . or cream. And 2. It'll literally taste like shitSo there'll be no point ^_^
The first games as we know it were probably made from sticks and stones, and drawn into the mud. My point still stands.
Human beings are inventive, and if he want's to make a game in powerpoint it's not impossible.
Just because something isn't impossible doesn't mean it should be made. Also you at no point had any point to even begin with
