>>
>
>I believe this is the same edition that my dad brought home from a
>garage sale circa 1987, and tried to run the included module (which
>IIRC was B2, not B1 -- "Keep on the Borderlands" -- did they maybe
>randomize which module you got in the box, along with the ruleset?)
>with myself, my sister, and my mother as players. It didn't go well,
>because my mom wasn't into it and my sister was too young for
>something with that many rules.

You had the next edition after this one, assuming the module you are remembering is the one about the Caves of Chaos, (a bunch of different humanoids living around the sides of a small valley).