Level maps, cropped to just the used areas:










The layout data starts at 0x13 in level files and is an uncompressed array of 512 * 32 * 2 bytes, but it's sorted by column rather than row, so the first two bytes are the leftmost tile in the top row, then the next two bytes are the leftmost tile in the second row, and so on. Each two bytes use the same format as JJ1: the first byte is the tileID from 0-239, the bottom seven bits of the second byte are the event, and the top bit of the second byte shows the black background.