Serendipity
Explorer
Eberon (the only d20 I'm playing right now, unfortunately)
Spelljammer
Dark Sun (which made for great reading - no one I know ever felt up to running it)
Ravenloft (in small doses)
I don't honestly know enough about Planescape to say one way or the other, but everything I *do* know suggests that it has major rock-a-tude.
Spelljammer
Dark Sun (which made for great reading - no one I know ever felt up to running it)
Ravenloft (in small doses)
I don't honestly know enough about Planescape to say one way or the other, but everything I *do* know suggests that it has major rock-a-tude.