While the RPGs listed are not free, I found this article on RPGs for Busy Adults interesting. There are a couple that I just might get. I think I qualify as a busy adult.
I loved Space: 1889. The setting was fantastic, and I also liked the RPG system. But for those who prefer a more nuts and bolts operation, you could try this GURPS conversion for Space: 1889
I love the Ars Magica role playing game. It’s a different sort of fantasy setting in which you play a wizard with a troup of associated characters. You can get a free download of the fourth edition Ars Magica here.
Savage Gamma World is a conversion of the classic TSR Gamma World role playing game to the Savage Worlds system. We used to love that game. Unfortunately, the conversion is missing the classic chart for trying out various unknown technologies.
Warhammer Fantasy Role Play was one of our favorite games back in my high school and college days. We loved the gritty, horror feel of the game, the sense that we all were doomed to the evils of Chaos, and the combats that resulted in a head flying in a d20 random direction!
Warhammer Fantasy Role Play has been in and out of print for years, bouncing from one publisher to the next. Dave’s games has a nice set of resources for the Warhammer Fantasy Role Play, including player and gamemaster sheets.
OPUS is the One Page Universal System. It’s free for the downloading. The author writes:
The idea was to create a system that would allow the rules to be printed on the back of each player’s character sheet, while still keeping it fast, fun, and pretty universal.
You might say its my own private revolution against the commercialism of my favorite hobby, and gaming companies that require you to buy endless rulebooks and supplements, after which they tank the whole system in a few years, and force you to spend again. You know who you are… (-;
Anyway, I am well aware that OPUS is not going to replace any such systems, but it is definitely a cry for a return to the days when gaming was about FUN!
Miniature Wargaming is part of the "adventure games" hobby, which includes r ole p laying and board games. Wargamers recreate battles on the tabletop with toy soldiers, like a more complicated game of chess. Models range in height from 6mm to 28mm tall, with 15mm and 25mm being the most popular. There also is a growing interest in toy soldiers and military models, such as the 1/32 and 1/35 scale plastic soldiers from Conte, and Marx.
The most popular miniature wargames are fantasy and science fiction based, such as Warhammer, Warhammer 40K, Warmachine and The Lord of the Rings. World War II games such as Flames of War and Axis and Allies are new favorites. Other favorite historical periods include Napoleonics, the American Civil War, and ancients, such as Romans or Greeks. Other gamers enjoy miniature naval wargames, recreating battles like Trafalgar, Jutland and the Coral Sea.
Hobbyists research historical periods and paint their tiny soldiers in accurate uniforms. Others develop "historically realistic" rules sets or build scale battlefield terrain using model railroad techniques.
For pictures, visit the gallery.
Some of the bigger hobby companies are Games Workshop, which produces Warhammer, Wargames Foundry and Old Glory Miniatures. Wizards of the Coast produces several lines of pre-painted miniatures games, such as the Star Wars and Dungeons and Dragons miniatures games, and a historical game with pre-painted miniatures: The new Axis and Allies game. Wizkids produces a fantasy collectable miniatures game, such as the Mage Knight and Heroclick fantasy games, the science fiction games MechWarrior and Rocketmen, as well as the quasi-historical Pirates of the Spanish Main.