Relative Adventuring

This is not my idea but one I have borrowed from the Conan game by Modiphius.

Imagine you are reading an adventure module for Rolemaster. The adventure describes an ambush by goblins at a river ford. In the details it says ‘There will be two goblins for every character’. In the next encounter, in an outer chamber of the goblin lair the numbers are ‘There will be three more goblins than characters.’

Every encounter describes the strength of the encounter relative to the strength of the adventuring party.