Way back when I was first gaming, I had the Dungeon! boardgame. Most of it is long since lost - pieces scattered, cards ripped, destroyed, and scattered, etc.
But a couple weeks back I found these two bits - pages 1 and 2 of the Basic Rules (with a big chunk missing) and the board:
I keep thinking I need to use this for something. A mash-up of Munchkin using the Dungeon, perhaps, and dice to move around (I've never played Munchkin Quest, I assume it works like that). Or a rules-light treasure hunting game with custom cards or just randomly rolled monsters out of the Monsters and Treasure Assortment. We'll see. For now, it's just the board and that chunk of rules.