That’s odd. Just to clarify, you opened the game, clicked on the start button and began the game in pitch darkness, and then arrow keys or wasd did nothing while you had the screen selected (meaning you did not click off of the game because sometimes you aren’t able to do stuff then).
If only for debugging but also because I want you to be able to play the game, would you mind sharing what device you played on? Thanks again for giving a response, and if I can fix this I will!