Game in question is Spore. I'm fascinated by space and this game has been my favorite for years.
Now, I would try to reverse engineer as much as I can as an experiment because I am interested in generally how game works under the hood. On example what steganography algorithm is used to hide models in pictures or algorithm for generating planets and solar systems etc... I can think of a million different things.
But, some of my wishes are also to put this reverse engineered code public on my GitHub as my work. I don't know if this would be okay legally and if it wouldn't create some type of a problem because I put my work public.
Of course there is a rule that sometimes you cannot fully reverse engineer something, especially something like a game this big and code wouldn't be 100% equal as the source. But again, this is something to ask before even starting. It would be something really interesting, that's something I know for sure.