You've just escaped from a mental hospital, where the doctor said you're sick - but how could it be?
Then you get to a lake where the doctor is standing there, saying that you're going to play a "game" with him.
Why is the doctor here? What game would it be?
You'll find out soon.

Version Jun 23, 2018.
A map by Paranoid_AF (a.k.a. NotParanoia)