For a game jam entry starts a little bit slower than I would like to - it took me a while to actually get it going at a decent speed haha. But that's not really valid critique - your game is great, very cute art, and very nice idea. I am still waiting for the final unlocks but I already can say it is a solid entry. Great job!
Edit: I just had to edit and increase the graphics rating because the hourglass becomes BEAUTIFUL once there is a lot of sand in it!