BOZ
Creature Cataloguer
I was thinking about this one. which monsters, or races, can have a campaign (or a large part of a campaign world) based around them - exclusively, or just largely so?
Mind Flayers are a great example of this. not only do they have their own lands, but they also have a lot of closely associated monster types (just look at Lords of Madness for example! ulitharids, illithidae, urophions, and more!), resources, and more.
the Drow (though often maligned for their overuse on this point) are another excellent example.
Giants (hill, cloud, fire and frost especially) also work really well for this point.
Sahuagin are a great example for undersea campaigns.
others?
Mind Flayers are a great example of this. not only do they have their own lands, but they also have a lot of closely associated monster types (just look at Lords of Madness for example! ulitharids, illithidae, urophions, and more!), resources, and more.
the Drow (though often maligned for their overuse on this point) are another excellent example.
Giants (hill, cloud, fire and frost especially) also work really well for this point.
Sahuagin are a great example for undersea campaigns.
others?