A nice, simple platformer.
It controls nicely, although it could use some "coyote time". I played with a controller. Not sure if that was intentionally supported, but it was very appreciated.
The graphics are nice. The dim lighting and music combine to create a nice spooky atmosphere. The horribly stretched background texture is letting you down though. I also liked the rocks, flowers and grass. It was nice to have some visual variety.
From a usability perspective, the web version seems to be broken (blank blue screen), and the downloadable version doesn't seem to include any way to quit (I've also screwed that up on jams before, so I feel you).
Overall though, I liked this game. Good job!