Yay, when I downloaded the .pck file and put it in the game folder all started to work.
I had fun playing your game. I do think the concept is nice, though I find it a little bit too easy. Once you understand that you can 'jump on broken hearts' to break them and are a little bit careful you can just go indefinitely down. Would be awesome if maybe the camera would be not only dependent on player movement but also on the time in game. That would force player to move quicker and quicker - at certain point causing him/her to make silly mistakes and in result die.
Definitely, when extended, it will make really awesome and fun game :).