The Fallencairn Valley
Aside from the wholly unique map system, which need not be described here, there are certain key house rules we use:
The game is played with inherent bonuses in order to increase the uniqueness of magic items.
All characters have daily powers which are roughly the equivalent of a magic item ability based on background, gained from a quest, or gained through roleplaying.
Every ten rounds in a combat, the characters gain an encounter power back.
Escaped monsters may not be worth full xp, because they can return to fight another day.
With the Four Months Later break, the following house rules were implemented:
The Morale system detailed at Dice of Doom.