Glorantha is a classic fantasy world created by Greg Stafford that is featured in role-playing games like RuneQuest and HeroQuest.
Greg Privat has created a website with pictures of wargames miniatures painted to represent various armies from the Gloranthan setting. Many of the models are conversions from ancients ranges, particularly Foundry and Gripping Beast; others are rare and obscure models, conversions and scratchbuilds.
Dan Brown offers A l’Ombe des Aigles, a set of free miniatures wargaming rules for Napoleonics miniatures.
I stopped buying Warhammer 40K stuff when they dropped the squats as a major race. In my basement workshop, I’ve got a horde of the stunties, in regular battle gear, on trikes, in exo-armor … you name it. You can find an online squat codex in the War Vault.
Matakishi has written The Natives Are Restless Tonight, a set of free wargaming siege rules for any game involving a large band of natives, and a small, but stalwart group of westerners. They would work for any game in the colonial era, including the Zulu War, Boxer Rebellion, Foreign Legion, North West Frontier and Indian Mutiny.
The rules use a card activation system, and involve rolling handfulls d6s. Casualties are determined by summing the attack dice and removing a figure for every multiple of 6, 9 or 12, depending upon the defensive situation.
Dracula’s Feast: New Blood is a print and play game of logical deduction for 4 – 8 players.