Fire At Will is a set of free wargames rules for 6mm fantasy battles.
fantasy
Nights of the Crusades RPG
Nights of the Crusades is an RPG that’s gotten lots of good reviews. The good news is that the pdf is free.
Shieldwall Fantasy Rules
Shieldwall is a set of free wagames rules for 6 – 8 figures, using a dice pool mechanism. It is short, but well done.
Border War Fantasy Skirmish Rules
Border War is a set of fantasy skirmish rules.