Oh, I liked it a lot! Very witty and in the spirit of the original piece.
As I understand it, one of the points of the original piece is to let listeners listen to the music of ambient sounds around them, to be in the place. So probably the best way to play this game is without headphones, to be in the place, where you're playing it.
Viewing post in 4'33 the rhythm game comments
Thank you!
As for the best way to play this game, I think we have at least two ways of experiencing it. The first is authentic 4'33 experience that you've described - no headphones, just game and noises around you. The second way means experiencing not the original work but video of this work as a part of videogame.