This image is 4 parts of a skybox I did for a game me and a bunch of friends were working on. It never became a "real" game buy you could fly around and shoot big space monsters at least so it was playable... I guess Anyway, the image is nearly entirely procedural and only uses two bitmaps (I think): the planet and a mask for the nebula in the background.
The coder, Osman Bekir Keskin (aka Spectre) who coded the engine we were using is the same guy who coded the engine (the PIE engine!) we are using for the bathhouse scene
>> Hi resolution image <<