Generic Space Combat 2 is a set of free wargames rules which allow players to design their own ships.
rules
Mobile Suit At War
Mobile Suit At War is a set of free wargame rules intended for use with Bandai’s Mobile Suit In Action figures.
Battle For 2mm Earth
Battle For 2mm Earth is a set of free wargames rules for pre WWI wargames in 2mm scale.
One Man One Knight Medieval Rules
One Man One Knight (OMOK) is a set of free wargames rules for medieval skirmishes.
Gloire Swashbuckling Rules
Rattrap Productions, which produces the very nice .45 Adventures rules is offering a free set of demo rules for its new set of swashbuckling rules called Gloire. They’re designed to allow miniatures players to recreate the swashbuckling adventures of Dumas’ Three Musketeers.