The Champions of Mystara boxed set from BECMI D&D has rules for this straight up. Not too difficult I'd imagine to update it to whatever system you might want to use, or just stick with BECMI. Create a few rules for cannon and you're all set.
The Champions of Mystara boxed set from BECMI D&D has rules for this straight up. Not too difficult I'd imagine to update it to whatever system you might want to use, or just stick with BECMI. Create a few rules for cannon and you're all set.
It doesn't matter what game you're playing as long as you're having fun.