Chronicles of Blood is a solo fantasy wargame. The basic game is free, but expansions are $1 each.
Rules: Fantasy
SAGA Battleboards For Lord of the Rings Dwarves
Here is a beautifully done SAGA battleboard for dwarves in the Lord of the Rings
Simple Fantasy Skirmish
Simple Fantasy Skirmish is a set of free wargames rules designed to bring kids and beginners to the tabletop miniatures gaming hobby.
Fantasy Warriors Free Wargames Rules
EM4 Miniatures offers a free download of the old Grenadier Fantasy Warriors rules by Nick Lund. This a nice set that I’ve played on a number of occasions. I actually have a couple of the original big box sets of Fantasy Warriors, complete with plastic miniatures.
Cinema Tactics
Cinema Tactics offers rules, scenarios and more.
From the rules introduction:
Cinema Tactics is a game of sword fighting, bow shooting, and spell casting in party level fantasy engagements. It can be played with two dice, a deck of playing cards, and a piece of paper. Players lead heroes against forces marshaled by the Overlord or bands of heroes may be pitted against each other.