CRPG Addict played through HeroQuest, an isometric dungeon crawler from 1991 based on the board game with the same name. He was fairly disappointed with the game's CRPG elements:

MobyGames codes [HeroQuest] as both a role-playing game and a strategy game, but it really is neither. There's no character development to qualify it as an RPG, and no actual strategy to qualify it as a strategy game. (..) 

[Gameplay] gets 2 for being non-linear in the approach to its missions and 1 point for some slight replayability with different classes. But it's far, far too easy, and even in the short amount of time I played it, it seemed too long. (..)

The final score is 19. Throughout the past year, we've learned that gamebooks don't work well when translated literally to the computer. Now we learn that the same is true of board games.

1. Game 198: HeroQuest (1991)