How to play.

Evil Sues: They are the typical Mary Sue. These Sues can never become self-aware. They are not aware of the self-aware Sue uprising. They are hopelessly enraptured by the fantasies they created around them. If playing as this character just write your portions of the story like a typical Mary Sue tale. You can only interact with the good Sues when approached and engaged. You can't interact with other evil Sues EVER! 
Note: Evil sues aren't necessarily evil though they can be. They just want to live out their fantasies at the expense of reality.

Good Sues: These are the truly special Mary Sues that can become self-aware. When you start as this type you are still a typical evil Mary Sue. A good Sue can only become self-aware after at least three paragraphs (ideally one paragraph per post). Self-awareness is activated when your character realises how absurd their reality is. A good Sue can only interact with other good Sues and evil Sues after becoming self-aware. 
Note: A good Sue doesn't necessarily start off as good. A Sue that chooses to become self-aware but doesn't answer the call to heroism is neutral or evil depending on actions. A good Sue that answers the call to heroism becomes good.