we do know what kind of game they took based on the marks on the bone left by flint knives and such-YUUUUGGGE critters. Pleistocene megafauna which, truth be told, I kinda wish there were a few examples still around. Megaloceros-the Irish elk comes to mind pretty quick. There's also extant examples of Clovis points embedded in mammoth bones. Must have taken some serious balls to hunt something like that!!!