I have had problems to generate pixel art for a game where units are of specific sizes such as 55x55 (not geometry but by pixels i.e. 55 pixels by 55 pixels). I have tried Gimp where I have misread many-times the sizes with the select tool -- it is irritating to get a bit too distorted size. Then I have used Inkscape that works actually quite good -- you generate the vector-image and select it and then you go to Export to bitmap where you can specify the size (this same feature is probably also in Blender, probably as easy). Anyway I am looking for something more powerful like having helper color-palettes easily or automatically-done perhaps like here with Gimp. I can find a variety of tools mentioning pixels but I hope you to point out the best before trying all of them.$ apt-cache search pixel|wc     99     861    6029Perhaps relatedhttps://graphicdesign.stackexchange.com/questions/7860/how-can-i-adjoin-images-with-imagemagick-for-pixel-artSome example with Photoshop here,  create pixel art by reusing basic things such as hands, hairs and  bodies (create separate files for them). A pixel-art competition here.Using blender for generating stuff here programmatically.
Which Unix tool for Pixel-art -generation?
graphics