I have had adding light coronas to D2X-XL in mind for quite a while already, and now their time has come . I had to overcome several hurdles on my way to adding this feature: First of all I had to figure billboarding (i.e. making a polygon always face the viewer), which wasn't so hard to figure after all. Next, I needed some acceptably good looking corona texture, and I found one . Finally I had to find a way to render them so that they look like they're supposed to. Though my solution may not be perfect, I think it's not too shabby; but see for yourself:

As always, this is an optional feature.