Thanks for the info, Admittedly, I am a bumbling fool / newbie when it comes to Rom editing, could you recommend some tools / documentation for expanding the memory of the game. I have attempted to read The Rom Hackers Bible, and a few other txt's reguarding rom's, however they seemed to be more confusing than helpful. Last night I attempted to use, G insert and G extract to extract the maps and then insert a new one, however with my limited knowledge of the rom itself, and the fact that the maps are compressed within the rom, the whole project failed?