The rules are fairly simple. Try to obey them in their entirety.
1. Don't create more pages than necessary.
1.A. Example: It is okay to have one page on the MPL language Tiger Iron and another for the MPL language Diamond because even though they are part of the same project, they go by different names and are different in appearance. A series of articles like this demands a series template.
1.B. Example: It is not okay to have two different pages the two personalities of a certain character, because they are the same character essentially, and may share a page.
2. Write your article from an impartial viewpoint.
2.A. If you write "the greatest Legend of Zelda movie in history" on a page for a Legend of Zelda movie, there is a 99.9% chance that it will be flagged for revision.
3. Do not create an article that has more than five degrees of separation from the purpose of this wiki (the purpose of this wiki being information on The Developer's Home, Game Development, and Gaming in general).
3.A. If Gaming leads to Zelda, Zelda leads to Wind Waker, and Wind Waker leads to an article on how to 100% Wind Waker, you MAY NOT write an article on that time you 100%'d Wind Waker.
3.B. Okay, bad example. That would be perfectly fine on a discussion page, just not on a normal page. See this list for more information.
4. Use your best grammar, punctuation, and spelling. Seriously, this is a public site, and it needs to appear somewhat decent.