I loved playing your game! It has such a great atmosphere with the beautiful art and visual effects, the fitting ambient music and sound effects which make the player feel every action (even walking!).
The gameplay is really fun. It makes you anticipate the clown box sound with every inch you move. The monkey box is a great mechanic and allows for clever level design. Also, the fact that the clowns stop chasing you after a while is a nice touch IMO.
Overall, this is a great game. Well done!