(This question is for fantasy worlds like in D&D and other such games.) Usually, as the adventuring party goes up in ability, they end up facing stronger and more powerful characters. Let's say ...
One of the things I like about 4e is the scalability of monsters. If I say, for example, that kobolds are common I can then make then the most common monster for encounters for quite a few levels. ...
I'm picking on troglodytes as an example. In MMI, the number of troglodytes appearing in their lair(cave system/dungeon) is 10-100. Troglodytes are a nice, not-too-tough, HD2 monster with some ...