In this answer, I assume that if you were to write such an answer, it'd take you several screenfuls of text. If this isn't true, this answer probably doesn't apply to you!
If what you want to write is the one, ultimate, definitive guide to do something, this site might not give you the tools to do so properly.
Rather than trying to organize everything that is known about a certain subject on a single page (the "Wikipedia" approach), we instead have a more pragmatic "I have a problem" → "Here is the solution" approach. The barrier to entry is much lower, as you don't need to be able to write the book on the topic to answer a question, but if writing the book on the topic is what you want to do then this might not be the place to do so.
Both approaches have their pros and cons, of course. In a twenty-page essay it's hard to find the nugget of information you're after. In twenty different questions, it's hard to find a fil rouge and form a coherent body of knowledge.
Trying to do both approaches means doing two things badly, so we'd rather focus on our strengths. The main problem with very long form answers here is there's no way to link to different parts of your own answer, while wiki engines typically make that possible and even give you a table of contents. The second major problem is table support, which we (regrettably) lack.
Some well known sources of "encyclopedic" bodies of videogame knowledge are (in no particular order) Wikia, the Strategy Wiki and obviously GameFAQs.