D&D is Anti-Medieval (blogofholding.com)
You can be forgiven for thinking that OD&D is a medieval European fantasy game. After all, Gary Gygax himself says so. He describes the original D&D books as “Rules for Fantastic Medieval War Games” (on the cover) and “rules [for] designing your own fantastic-medieval campaign” (in the introduction). However, in the game itself, there’s precious little to suggest feudalism, Europe, chivalry, a post-imperial dark age, or even the existence of a monarchy at all.