David Medlock offers The General Purpose Wargame, a set of semi-skirmish level wargames rules for simulating battles from the Stone Age to the Victorian.
universal
JAGS Revised Free RPG Rules
JAGS stands for Just Another Game System and is described as a “rules heavy” universal RPG system. It’s gotten some notice around the ‘net and is available for free as a pdf or you can pay to get a print version.
Savage Worlds Showdown Alpha Rules
PEG has released the latest version of Savage Worlds Showdown, their universal skirmish rules. It’s available for a free download.
A Cast of Thousands Miniatures Rules
A Cast of Thousands is not so much a set of miniatures rules as a rules mechanic. It’s designed to allow you to play “cinematic games” where you set your own level of risk-and-reward.
RISUS RPG Lite
Risus is a free RPG from S. John Ross. He writes:
Risus is a complete Role Playing Game (RPG) designed to provide an “RPG Lite” for those nights when the brain is too tired for exacting detail. Risus is especially valuable to GMs assembling a quick convention game, or any late-night beer-and-pretzels outing. While it is essentially a Universal Comedy System, it works just as well for serious play (if you insist!). Best of all, a Risus character takes about 20 seconds to create!
CREDIT WHERE IT’S DUE
Inspiration for the nature of this game comes largely from the sadly out-of-print classic, Ghostbusters, from West End Games, sparked against an idea (Clich�s) from DC Heroes. The final shape and form of the game was inspired by Over the Edge, from Atlas Games. Other RPGs (most notably GURPS, FUDGE and Tunnels and Trolls), have also provided valuable inspiration …