GrimDark Racing is a set of simple rules for races in the Warhammer 40K universe. Just use models you already have. There’s plenty of violence, of course.
Refurbishing Old Wargames Scenery
Scotty’s Wargaming blog has an article on refurbishing old wargames scenery. I’ve got quite a bit that I’ve accumulated over 40 years of gaming that needs touching up.
Making A Long Marshes Game / Display Board
This is a nice video showing the construction of a beautiful marshes board. The board was designed for display, but the techniques could be used to make terrific battle boards.
Fast Play Rules For The Seven Years War
The Fast Play Rules for the Seven Years War. The author writes:
These are fast play rules for mid-18th century battles with 15 mm figures, the focus is on playability. They are ideal for campaingnplay, where you would want to finish the battle in one or maximum two hours. They are not suited for historical refights.
Paper Dungeons and Starship Decks
Germ’s World has a two sets of paper corridors for use as terrain with your wargames: a set of dungeon corridors and a set for science fiction. The sets include wall sections of various lengths, crossroads, junctions, staircases, archways, pits, traps and more. They are easily as good as many of the commercially available sets. You could use these for any number of games, including Games Workshop’s Space Hulk or Warhammer Quest, WizKids’ MageKnight Dungeons, or just a regular Dungeons and Dragons slaughterfest.