I’m using the 3rd person Controller as the player controller, and whenever I try to play the game, it always gives me a blank, black, screen.
Go with 2x3 layout, run, click the main camera (character controller) in the Hierarchy, mouse-over the scene view (not the game view) and hit the F key to zoom in on the camera. Where is it? My guess is it’s not where you think, and/or not pointing where it should.
That or you have no lights in your scene, and no ambient light either.