actually the dungeon is more an alternative in leveling up and running to the inner region then an expansion. here is an easy way to add the dungeon as an expansion. what you get is double game time !

1. take the 10 dungeon cards for the mainboard out of game.

2. the dungeon will be entered by a 0 result in crypt and mines only.

3. a bonus of 10 will be given to all strenght and craft for creatures, traps etc in the dungeon. so the dark lord has craft and strenght of 22.

4. after winning or loosing in the treasure chamber you come to the next space after mines or crypt. the werwolve and pit fiend get a bonus of 20, but werewolf just get one die to add to the strenght.

5. you can use a d4 for movement in the dungeon

for all who cant wait for the city, just buy multiple dungeons ! for example the crypt dungeon without xraft- creatures, the mines dungeons without strenght creatures, a third dungeon in the ruins .....