Malevolent maps are PNG image files. They should be 480 by 320 pixels in size. The map may contain any colors you wish, what is important to note is that solid portions (floors, walls) have alpha values greater than 0. So, transparency must be preserved in the image for it to be playable. People and items will fall through transparent areas, and treat all others as solid. If you do not have any transparency in the image, it will be treated as one large solid block, and thus, will be completely useless as a map.

Map submissions will be rejected if they do not comply with the above specification.