Games Workshop offers an “essential” edition of its Warhammer 40K rules free for the downloading.
Miniatures Rules
All Quiet On The Martian Front Rules
All Quiet On The Martian Front is a great game set in an alternate history where HG Wells’ Martians return in 1908. It’s got a WWI vibe, with steam tanks and big cannons and motorcycles. You can take a look at the free rules here.
March of Eagles Fast Play Napoleonic Rules
Victrix Miniatures has released a set of free wargaming rules called March of Eagles, which is designed to go with their plastic boxed miniatures. They write:
We commissioned Barry Hilton, League of Augsburg, to write a set of fast play Napoleonic rules. The rules are quick to learn, very realistic, extremely bloody and a game can easily be played within an evening. At present we are only publishing rules for infantry combat but we will be releasing supplements to cover artillery and cavalry.
These March of Eagles rules are included in each box of Victrix figures along with lots of cut out counters that are an aid to the rules. We have also included a very useful set of measuring devices within the sprue frame.
Flames of War Quick Start Rules
The folk at the Flames of War offer “Open Fire,” a set of quickstart rules for 15mm WWII gaming.
Zombie Escape Rules
Zombie Escape is a Warhammer 40K modification for Imperial Guard versus Zombies