So we all like separating species from class, but I don't particularly love the AD&D implementation. My goal here was to implement a way to attach species traits to characters of any class (so you could have, for instance, a dwarven Cleric or a halfling Thief) while still preserving the mechanical core of the game.
My starting point was to treat the Dwarf species-class as a dwarven Fighter, the Halfling species-class as a halfling Fighter, and the Elf species-class as either an elven Fighter or an elven M-U. After that, I extrapolated and generalized. I also made minor edits in places where I felt like the Basic rules don't make sense or are a bit too inelegant for my tastes (halfling weapon restrictions, turning the halfling's ability to hide in underbrush into a 5-in-6 instead of a 10% chance, etc...).
Here are the rules. You can append these templates onto characters of any existing class. For added fun, let people use these templates on the canon B/X species-classes so you can be a dwarven Elf or an elven Halfling (or a double-Dwarf???)
|Credit: Larry Elmore|