Except that people won't go out and make separate threads for their pixel art because it kind of sticks out among all the sculpts, UDK and cryengine stuff. There's a relatively small amount of low-spec art on here, which is why this thread exists; theres little enough of it to stick in one thread but not enough (in most…
Put all of them in a 1024². Should be plenty. You could use 6*6 squares of about 150² pixels. That gives you 32 squares, 26 for the letters, 6 variations for the back. 150 pixels means they that you can fit 10 of them side by side on a Retina iPad and have them come up perfectly. A scrabble board is 15x15 or something, so…