I decided I wanted to hack Final Fantasy 1, one of my favorite games growing up, that I put in more than 100 hours playing. I used fceux as my NES emulator, same as in the video and followed mostly the same patterns.
I kept some notes on how I did it and thought others might find the process as interesting and fun as I did. I ended up losing most of the notes from a few years ago, so I went back and rediscovered the different memory locations and values to use again.
Reminds me of back when I used Disk Wizard 2 to edit Ultima IV on the Atari 800XL. Reconfiguring the map, tweaking character stats, etc.
Maybe I should write an article about that.