In order to give back to this community, and as a huge thank you to all of those who put work into the emulator, we've decided to share our Nightmarish Jitterbug instance.
This instance was scripted by Tokei, with YouTube videos as sources, as well as me running it on iRO. A huge thank you to our ex-player Deegs for lending me his iRO RK in order to run the content.
A small amount of dialogue is missing, and you're welcome to contribute if you run into the actual lines. They're marked in the script file itself.
Item drop rates were the only thing really customized, enjoy the release!
http://novaragnarok.com/download/NightmarishJitterbug.txt