Hi, I wrote a post in the Deathwatch forums about rules for running maze encounters using a deck of cards (although I also had Warhammer 3rd in mind while writing them).
I'll use these rules for encounters in sewers, tunnels, deep forests, etc. I have used Strange Eons to create the cards.
Because I do not want to repeat myself, I leave here a link to my Deathwatch post, in case you are interested: www.fantasyflightgames.com/edge_foros_discusion.asp