This is the background I made for The Tournament - Prelude (2). You can't really see it so I thought I'd upload it separately.

I achieved background the effect by first creating a ring filling the canvas, then copying it and scaling it down gradually. Then I used photoshop layer effects "Bejewel and Emboss" and "Inner Shadow" to give the rings some dimension. Finally, I added a Twirl filter effect followed by a Radial Blur with a zoom effect.

The landmass is just some map with a Median noise filter and an inner glow, with a large white font set to multiply with an outline layer effect.