pixel
token - pixel
points - Pixelist
file types - .gif .png .bmp
max filesize - 2.5mb
description - pretty pictures
Pixel is for pixel art, either animated or not. Typically each pixel is placed one at a time using a pencil tool. Large pixel art can take days, weeks, even months depending on how many time-outs an artist takes from a project.
The rules for a pixel OHB may or may not include a palette and/or size restriction. Even if a size restriction is not included in a battle's rules, it's a good thing to consider. The 8-bit era saw a lot of resolutions around 320x200, but these did not have square pixels. The PC's VGA had a hacky thing called x-mode that demo scene programmers found by manipulating the refresh rate, achieving 320x240 which has a 4:3 ratio and a square pixel.
Note that pixel entries must
only include original art (and possibly art included in the bitpack)--that means no pasting images into your entry.
Links
Wikipedia's explanation
Pixel Joint is an online competitive pixel art community
Wikipedia's guide to classic computer palettes
Wikipedia's guide to classic vg console palettes