CORPS
Complete Omniversal Roleplaying System. CORPS is BTRC's first "universal" system, but has been superceded by EABA. However, there are still die-hard CORPS aficianados out there who prefer it.
Legacy system: Another term for “out of print" and “out of date”. This section is going to remain static, as aside from a few licensed third-party CORPS products, there will no more material produced for this game system. However, the original conspiracy-based gameworld is under consideration as an EABA v2.0 release...
Blurb...
Tabula rasa, a blank slate. CORPS (Complete Omniversal Role Playing System) is the role-playing system that looks at what you want. Rules you can remember. Dice you don't have to use. Guidelines for both new and experienced players. Everything you need in one volume that's half the thickness you would normally expect. From swords to psionics, magic to machine-guns, past, present or future, this game has what you need. The only thing it can't supply is what you have to bring to the game...imagination!!!!
What you get
CORPS is a six attribute, 1d10-based system for any sort of campaign based on human norms or alternate worlds. So, while it can handle mages, psychics and mercenaries, it doesn't handle giant robots, powerful superheroes and city-stomping monsters. Actually, it does handle them, but with a level of realism that removes the fun from the genre. After all, if a supervillain can stop cannon shells with his skin, your superhuman martial arts will just give you the amazing ability to break your knuckles faster than the eye can follow. Anyway, CORPS will work for science fiction, modern thrillers, horror, and fantasy equally well. The character generation system gives the players a lot of flexibility to make interesting characters, and it gives the GM important tools to shape the way the characters and the game world interact, through things like cultural norms, skill limits, legal systems and region-specific technology.
Mechanics
CORPS is a semi-diceless system. Tasks are rated by Difficulty, and your appropriate skill or attribute is compared to the Difficulty. If your adjusted skill is equal or higher, you succeed. That's all there is to it. If your skill is lower than the Difficulty, you roll 1d10, and the success chance is a function of the difference. High skills allow you to complete tasks in less time, or absorb modifiers for more difficult tasks, like called shots, or working in adverse conditions. Combat is fast and deadly to the unprepared. Characters act in order of skill level each turn, with more skilled characters getting more actions. Damage from weapons directly affects the part of the body hit, with location-specific effects like knockouts, blood loss and broken bones. Armor protects you from lethal damage, but you can still take non-lethal hits through blunt trauma and other effects.
CORPS, 2nd edition (US$10.00)
Supplements
Just so you know, all CORPS roleplaying supplements require the CORPS basic rules for character generation, combat and so forth. 
CORPS VDS is designed for use with CORPS, but is not required to use it or to transplant your vehicles to other game systems. CORPS VDS is a generic vehicle design tool for CORPS and other realistically grounded rpg's. This doesn't prevent VDS from having rules for magical power plants for science fiction topics, just that VDS treats everything in a logical, consistent fashion. For those of you familiar with our 3G3 product, it is about as complex (160 pages), with chapters for each type of vehicle subsection (power plant, power train, structure, etc.). VDS is an extremely detailed and number-heavy book, so if that is not your cup of tea, take a look at EABA Stuff! instead.
CORPS VDS (US$10.00)
Dreamtime is a game universe set in a mythical past, when the People were a new thing upon the face of the Earth Mother, and the world still seethes with the forces of Creation. If you can't carry it, you don't own it, and everything you do own is made of wood, leather, stone or bone. But you are rich in magic, and know the secret ways of the shakt, whom you can call to do your bidding, help that is necessary when things come out from the Bad Places to threaten the People and sometimes the Earth Mother herself. It's odd, it's obscure and it's not for everyone. Some are like "awesome!", others are "meh". Anyway, we like it.
CORPS Dreamtime (US$4.00)
Apocalypse, a game universe set in an alternate present. The short form of the background is 'Nazi elves come back from whatever dimension they've been hiding in and enslave humanity'. The long version is quite a bit more detailed and internally consistent, but no less depressing. Get a free sample from here. It's rife with possibilities for adventure. Apocalypse is a 128 page book, most of which is background detail.CORPS Apocalypse (US$9.00)
Down in Flames is a baker's dozen of world-wrecking scenarios for CORPS or any other role-playing game. It's 12 bucks and 72 pages. You can download the first chapter from here.
CORPS Down in Flames (US$6.50)
TimeLords is the exact same material as in the EABA version of the gameworld, except it is all done in CORPS stats. See the EABA product for more details.
CORPS TimeLords (US$10.00)
More?
You can also get a computerized character creation system for CORPS (and several other systems) from AlterEgo Software by following the banner link on the main page, or clicking on the company link here.
Applied Vectors has a CORPS rules expansion that is longer than the rules itself! You can see it here.
Hey! The original CORPS conspiracy background has been licensed to Precis Intermedia Games for their Active Exploits diceless system. You can see an archived copy of the GameWyrd review of it here.
You can buy the second edition and discover CORPS firsthand, or you can get it free!!! Just download the Nutshell edition from here! Once you've seen what we can do in four pages, maybe you'll be interested in the other 140!!