bib has tried to tell me for a while now that I should go and explore the AboxMod1 formula by Kali, and when we met in Karlstad we discussed the idea to have a challenge to make the best image from a 'simple' formula. When I went to check Kalis box out on my way home on the train I felt that this formula would be perfect for a challenge like that… not much variation, but still the possibility to do many kinds of images from...
Mandelbulb 3D, Jesse, Kali, Luca and me... (And Jérémie who pointed me here)