While humanity has evolved throughout the ages, mastering fire and developing advanced technology, some people such as Mario and Luigi are primitive people who do not know of modern society and must use "stone balls" and their jumping abilities to defend themselves from outsiders.

While humanity has evolved throughout the ages, mastering fire and developing advanced technology, some people such as Mario and Luigi are primitive people who do not know of modern society and must use "stone balls" and their jumping abilities to defend themselves from outsiders.