Stormrunner said:
....GURPS works very well for grim-and-gritty, low-magic campaigns. X-Files? Saving Private Ryan? King Arthur? Cthulhu? Constantine? Dracula? Firefly? Babylon 5? Sam Spade? All good.
Star Wars? Star Trek? Lord of the Rings? Battletech? Warhammer? Batman? D&D? Sin City? Cyberpunk? Not quite so good, but doable.
X-Men? Thor? Dr. Strange? Superman? The Matrix? Wuxia? Slayers? Not really up to it.
Generally, the farther away from "standard human" a character's race/skills/powers are, the harder it is to simulate him in GURPS. The system handles swinging a sword or shooting a pistol quite well, but doesn't scale well to swinging a battleship or shooting a Wave Motion Gun.....
I can't really agree with this. I've playing in or run GURPS games set in things like X-Files, King Arthur, Star Trek, Mecha-Anime, Batman, Noir-Supers, X-Men Mutant Styled, The Matrix Concept, and a couple of real kick-ace Wuxia-Hollywood Action Mini-Campaigns. It was always simply a matter of applying different optional rules and choices in character creation. All is very doable if you put forth just a wee bit of effort.
Another point of interest, I can't accept d20 games as "universal" systems because they are class-based. To take the
"classic sales-tag-line" from GURPS, if I wanted to take my Fantasy Mage and team him up with a World War II Operative and send them searching for treasure in Renaissance Italy; I can. In d20 I would need d20 Past, D&D, and d20 Modern (or its WWII equivalent) to cover all the needed classes and options that are expected by most to give the characters variety and options.
Each time you go off in a direction that isn't clearly laid out and need additional options you have to try and figure out proper multi-classing options or find classes from other sources, or make your own up and hope they are well balanced.
Don't get me wrong I have enjoyed many games in D&D 3.5 and am typically the DM, but I have a far easier time running a thrilling GURPS Supers game in 3rd or 4th edition rather than a mid to high level D&D game. But that's just me.
There are other systems out there can be adapted to universal systems, West End Games D6 system, the Reisus (sp?) game, World of Darkness, but they are all typically skill based. Class based systems can do what they are designed to do very well, but to take them off into different areas other than they were specifically designed can make for some hard work.
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As for my favorite books, hard to say but the ones I have used the most are:
Horror
Blood Types
Creatures of the Night
Supers
Psionics
Historical ones would be:
Imperial Rome
Vikings
Celtic Myth
Aztecs
Old West