Steve Winter and Jeff Perren offer a set of free wargames rules for simple, man-to-man skirmish in the Zulu War.
Miniatures Rules
Lord Merlin’s Rules of Engagement
Lord Merlin’s Rules of Engagement is a set of free wargames rules for medieval style wargames. What makes these unique is that they are designed for large scale (70mm) figures. Despite the “Lord Merlin” monicker, there doesn’t seem to be a fantasy component here.
Advanced Wargames Rules
Advanced Wargames Rules is actually a fairly simple set of generic rules
Black Powder Skirmish Rules
Black Powder is a set of free wargames rules by Wes Rogers for skirmish warfare in the period 1600 – 1870.
The Great 1857 Rebellion/Mutiny
The Great 1857 Rebellion/Mutiny is a set of free wargames rules for the Indian Mutiny.