Napoleonic Fury is a Napoleonic adaptation of the classic Fire and Fury rules.
Build Your Own Main Street
The Illinois Historic Preservation Agency has a great collection of paper models of historic Illinois buildings. You can put together a very nice early 20th century mid-western town from these models.
Final Round WWII Rules
Final Round is a set of free wargames rules for World War II infantry combat games.
To Ur Is Human Sumerian/Mesopotamian Warfare Rules
To Ur Is Human is a set of free wargames rules for Sumerian/Mesopotamian warfare. The game is designed to be played with 15mm figures on a grid.
Army Men Skirmish Rules
Army Men is a set of free wargames rules designed for use eith the classic plastic army men.