There is an old boardgame I have tried to redesign a few times, its called 'The Sorcerer's Cave'. My redesigns mostly consist of redesigning the illustrations and adding additional cards because the core mechanics are perfect in there simplicity but the game pieces are fairly limited.
Its basically a simple dungeon crawling adventure for any number of players and shares some similarities with Roguelikes:
You uncover a random map segments each turn.
You encounter monsters that are either hostile or can be approached to join your party.
You're characters can carry a limited amount and treasure is weighted
you collect magic artifacts to boost your fighting power.
It is pretty fatalistic and stupid choices lead to death.
You should check it out and buy a copy if you can. I have bought three copies from charity shops over the years.
Heres a link
http://boardgamegeek.com/boardgame/1202/the-sorcerers-cave