I'm glad you asked that.

For me, the door is considering the world you're introduced to, the expected path and course. You approach an open door as if it is leading you directly somewhere, but, often, it is instead a battlefield, a dance of strategy and sacrifices whose rules and steps feel obscure and obfuscating. Beyond the game, what's really out there? What is really gained or lost or learned? Do we really even figure out the destination once we get past the door or do we just try to navigate the game board while making whatever sense we can of what lies in the distance.