I like the graphics and the idea of platforms becoming solid/non-solid with time, but there are a few problems with your game:
- The ghost starts halfways outside of the screen, which made me not know how to play the game for a while
- In order to complete the first level, you need a special jump since a normal jump does not work. This needs better explanation. You did display some button inputs during the first level, however i do not understand them.