Sword and Dagger are a set of free wargames rules for medieval skirmishes. They’re very straightforward and at 11 pages, probably good for beer and pretzels games.
Rules: Medieval
Solitaire Song of Blades and Heroes
Dougi has a set of adaptations for solitaire play of the popular commercial set of rules Song of Blades and Heroes.
Jousting Tourney Rules
Al Hewitt and Ric Willey offer Jousting, a set of free wargames rules for medieval tournaments.
Argad Medieval Skirmish Rules
Argad is a set of free wargames rules for skirmishes in the dark ages and for pirates in the 17th and 18th centuries.
Medieval Skirmish Rules
Richard Bradley’s Medieval Skirmish rules are offered for free on the Tyneside Wargames Club site. There actually are quite a few free wargames rules there. All look quite playable and fun.