BECMI D&D introduced roleplaying games to the world. Before BECMI D&D, only a few hobbyists had ever heard of roleplaying games, and no widely known books explained what roleplaying was or how to do it. B/X D&D did begin the journey, but BECMI D&D finished it with great success. By the time BECMI D&D finished its run, most people in the US and across the English speaking world had heard of Dungeons and Dragons and roleplaying games.