Thanks, that is what I thought. The solution for properly pixelated light effects surely must be setting everything for the 1:1 internal resolution. The paletted lights and shadows, however is something I've never seen in action aside from 16-bit era videogames, and I am not sure it is worth the trouble (but it is sweet in link to the past shadowy dungeons, I refuse to believe they doubled the tileset and sprites just for shading). Having a palette swap system working, however, seems very useful for various reasons besides light effects. Oh, and sorry for hijacking the thread, I was just curious and I learn something everyday on these boards.