RyanD said:
I'm just stating the fact that since most people play D&D or a D20 game, and they're far more interested in just playing than in learning a new game (or finding a whole group to try a new game), D&D--D20 gets an advantage by default.
This gels with my experiences in both my D&D group and my HERO group. In both cases, the players have achieved a level of mastery with the system that allows them to play, and they aren't too interested in going through that process again in order to get back to the point where they can just play.
I've also noticed this in my role as an ENWorld Gameday organizer. Being ENWorld-based, D&D events fill their seats pretty easily, d20 events slightly less so. Other games generally are a harder sell, unless they're games that our regulars tend to play. E.g., Eden's
Buffy and
Angel RPGs were big with a group of regulars for a while, so events featuring the system were easy to fill.
As to the "Is d20 enough for you?" question... Yes and no.
I'm the main guy in my groups who buys many different game systems. My interest in the hobby extends beyond any particular game; it's
roleplaying I love, so I want to see what's out there. To reiterate Ryan's point, I've found that most people I've meet don't care about
roleplaying games so much as they care about D&D, HERO,
Shadowrun, or whatever
specifically. Ergo, I'm usually the odd man out. It's me saying, "Hey, guys, let's try X, Y, or maybe Z." And their answer is usually: "I'd rather just play what we know."
That said, I think d20 is an excellent engine. And, as long as a given game is going to do what d20 does and not really add anything unique to the gaming experience, my general reaction is usually "Why wasn't this just done as a d20 game?" I can think of a couple of post-d20 releases that, IMO, gained nothing by using their own system.