OPUS is a one page, universal role playing system.
Role Playing Games
Seventh Sanctum Random Name Generators
Back in the heady days of first edition D&D, there were a lot of small companies publishing books that essentially were nothing more than lists of names, treasures, monsters, etc. During a game, you used these lists to randomly generate filler for your adventures.
The Seventh Sanctum is essentially a computerized version of these old random generator books. There are random generators here for just about anything you can imagine: pirate ship names, character names for a variety of settings, superhero powers,, equipment lists, dark rituals, several evil sounding name generators, a magical girls, a martial arts move generator, and more!
I spent way too much time playing with this one.
Recon, The Role Playing Game Of The Vietnam War
Recon, The Role Playing Game Of The Vietnam War was published in 1982 by Role Playing Games, Inc.
The Last Human RPG
In this unusual free role playing game, you play a simple robot charged with defending the last human being. The Last Human is written by Nathan Russel as a part of the 24 Hour RPG Challenge.
Searchers of the Unknown Minimalist RPG Rules
Searchers of the Unknown is a set of free role playing rules. These are one-page, minimalist rules, each of which is designed as a stand-alone product. The collection includes: Searchers of the Unkown, Dwarven Glory (and supplement), Karry on Krawling, Witches of N’kai, Adventurers!, Cyborg Samurai Are Go!, Dirty Rotten Scoundrels, Funkin Fists of Fu, Jung Guns, Raiders of the Unknown, The Bastards, Brickmasters of the Unknown, Mutant Got Gunz, Mutant Scavengers of the Ruined Earth (and supplement), Tempora Mutantur (and supplements), Searchers in Spaaaace!!!, Scavengers & Spacewrecks, Swashbucklers of Mars (and a supplement), and Song of the Symbi.