D&D 3.0: Tales from Mystara
Classes: Halflings prefer the Rogue, Bard, Fighter classes but they can be of any class. Some halflings follow the Wizard, Druid and Sorcerer class and become powerful spellcasters.
Mystara Locations: The main halfling nation is the Five Shires but there are halflings all around the Known World. In nations like the Broken Lands they are slaves or food but in other nations they have complete families and clans.
Social Class: Halflings from outside the Five Shires cannot be from a Social Class higher than Wealthy/Untitled, any roll result higher must be lower to that social class level.