At the end of the game the secret black market says this to you.

You did amazingly, and were meaningful. Hence, you get one question. If you ask us who we are we will lie.

You can then ask any one of four questions. Here are the questions and answers.

How much do you control.
Very little. Almost everything. A million deals to make a thousand work. A hundred needed, to preserve ten key actions at ten key times. Figuratively speaking.
Why are you doing this
Because along time ago someone saved us in exchange for a favour. To this day we have not repaid our debt. We must repay all debts.
What are you
We are conenient. We are satisfied. We are your foundation.
Who are you
We are something complety alien to you. (lie)
Who are you