Text adventures: what are they, and where did they hide all the graphics? Until now, these questions have gone unanswered. But this week, we'll be looking at the world of games that existed before any kind of mandatory visual component—and continue to exist to this very day. And we have a real expert on hand: Aaron Reed, author of the upcoming comprehensive text adventure respective,  50 Years of Text Games: From Oregon Trail to A.I. Dungeon. So listen in as host Bob Mackey helps steer the Retronauts podcast ship through these formerly uncharted waters. (By us, anyway.)