Thanks NiD Remix with new blocks(1.3) and little change. -------------------------------- My shape a=29 b=18 c=11 Zoom=6 Pen=3 Press Space. Choose new parameters and press space... ---------------------------------------- Original note : A Barry Martin formula. Not a fractal but an attractor. Change a,b and c to get different shapes. Zoom in and out to fit it on the screen. One good is a=2 b=-4 c=-11 zoomed at 26. Another good one is a=-6, b=2 c=9 zoom=15 Post your discoveries. Ex Lillypad : a=21 b=-5 c=-11 Zoom=14 Pen=6