Dungeons & Dragons (D&D) has a great influence into many aspects of society

This Duluth marketing agency, on Superior Street, has an unusual slogan on their business window.

Before Gary Gygax and Dave Arneson created D&D; nobody spoke about getting better at something by “leveling up” their skill.  My point is that D&D’s lexicon (special vocabulary) is now considered to be so widely known to most people that a marketing agency uses D&D’s lexicon in their advertising campaign.