The Toposolitario site offers a wonderful set of four wheeled science fiction utility vehicle paper models. Looking a bit like the Dark Knight movie Batmobile, they come in a variety of colors and styles.
Science Fiction
Mechbrawl Card Game
Mechbrawl is a free expandable card game. In it, you face off against your opponent in a giant, customizable war robot.
Tom’s Spaceship Games List
Here’s an amazing list of hundreds of spaceship games. Compiled by Tom Granvold, it includes board, miniatures, dice, card and role playing games. If you like such things, check out it out.
Doom: The Next Chapter Role Playing Game
Doom: The Next Chapter is both an RPG, and a tabletop strategy game based in the Doom universe. It is a great example of how role playing mechanics can carry over to miniatures gaming.
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.