Generic Space Combat 2 is a set of free wargames rules which allow players to design their own ships.
Ares Magazine Citadel of Blood Boardgame
The Internet Archives has collection of old Ares Science Fiction and Fantasy gaming magazines. Issue #5 has a complete game called Citadel of Blood.
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.
Free Waterloo Articles Bundle From Wargames, Soldiers and Strategy
For the 200th anniversary of the Waterloo campaign, Wargames, Soldiers and Strategy offers a free downloadable bundle of articles from their magazine.