Yup, I spent the three days getting all the mechanics from the videos in, then looked at it and realized I had no idea how to turn it into a game. I didn't want to break with realism and make up gamified reactor designs, so I decided to just call it a simulator :]
At one point I was planning to have a custom scenario builder and scenarios to recreate the various historical disasters, but then my motivation dried up suddenly and I had to push myself to even put in some UI...