Whatever you do, don't accept the invitation. It could be a simple letter in your mailbox. A single document in your email. Even a seemingly harmless pop-up on your computer. They'll be persistent, demanding horrid actions for you to committ. You'll try to quit, to go back to what used to be such a great, normal life. You'll fail. The game has its hooks in all of us, and it's only a matter of time until you're next. God help us all.