QUOTE (Tymeaus Jalynsfein @ Nov 3 2012, 02:40 PM)

Ummmmm.... You really should look at the actual books. Right there on the Covers:
Augmentation: Core Medtech Rulebook
Arsenal: Core Gear Rulebook
Runner's Companion: Core Character Rulebook
Street Magic: Core Magic Rulebook
Unwired: Core Matrix Rulebook
So YES, they are CORE RULEBOOKS.
No, they are
supplements.
Any role-player with more than a year's experience with the hobby, knows that "core rules" means
the minimum rulebook(s) needed to play the game. And for SR4A, that means .... the SR4A book, and
only that book. It doesn't matter if the word "core" shows up on the cover or not; including that is only a marketing gimmick.
Unwired, for example, is no more "core rules" for Shadowrun, than ....
Ultimate Magic is core for Pathfinder. Or
Ultimate Powers is core for Mutants & Masterminds 2E. Or
The Complete Psionics Handbook was core for AD&D 2E.
Seriously, think about it. Do you have to buy ALL of:
- SR4A, $45
- Companion, $35
- Unwired, $35
- Arsenal, $35
- Augmentation, $35
- Street Magic, $35
... totalling
$250, before you can begin to play the game?
OF COURSE NOT. One purchase, just the SR4A
core rules, is all you need. The rest is
supplemental material.
QUOTE (RelentlessImp @ Nov 3 2012, 03:49 PM)

Not quite true. Every edition of D&D has had the Core Rules separated between a Player's Guide (character creation), a Dungeon Master's Guide (character advancement, advanced character generation) and a Monster Manual (things to fight) - and that is, in fact, the minimum rules required to play.
I never said all games are just one book - I said, the core rules of a game are
the minimum needed to play. For SR, that's "the big book". For D&D, that's PH, DMG, and usually the MM (though it's entirely possible to play a game without ever using the MM, at least in 3.XE).
To play Shadowrun, though? You have only ever needed the one Big Book. And that's as true of SR4, as it was of SR1.
In D&D 3.XE terms: Arsenal is like
Complete Warrior; Street Magic is like
complete Arcane and/or
cmplete Mage. They expand upon the mechanics and options of hte
core rulebook, but ar enot themselves required for play. They are
supplemental rulebooks.
Otherwise, you would be literally
unable to make a Mage or Adept, without Street Magic; literally
unable to make a hacker or technomancer, without Unwired; literally
unable to make a street samurai without both Arsenal and Augmentation.
Since you
are able to do all of those things, with only the Big Book?
The Big Book is the core rules and all else is supplemental. You don't need Unwired to make a hacker - but using Unwired will let you make a
better hacker. You don't need Arsenal to make a samurai - but using Arsenal will let you make a
better samurai. And so on.