hi, i've tried a few times to contact you - not sure if you've seen the messages. I have hacked, quite extensively, Jackal for the NES. I have a full level, BG graphics, and sprite editor, and the entire source code decompiled by hand. If you'd like to collaborate, of just want some of the info i have, feel free to reach out. jpetheman@hotmail.com and RayOfJay on discord. Im in the nesdev server.