FIRST exit: quit without saving

90% of worlds generated are (in my opinion) unplayable. This can happen if you're stuck on a small island, there are no villages at reasonable distances, there are no nearby trees, sheep, or chickens, and for a host of other reasons.

IDEA: on the FIRST playing of a world (before that world has ever been exited), add a button to quit without saving.

This will save a few keystrokes and clicks when we inevitably have to purge the old game.

NOTE: I'm not asking for a general "quit without saving" button. That's been dealt with before. This request is JUST for brand-new games where you're exiting the world for the first time.