"... and get as high as you can". Oh, college life.
This was a cute little game. I agree with Kikopu that it lacks an objective. I also played expecting the object I'm stacking to change on its own at some point, then realized I had control. The limit then became how many physics object would my browser handle before the experience got too choppy.
Definitely see some potential in this. Good work submitting to the game jam!