Ok, my first L.D. submission. An homage to crusty old Commodore 64 platformers. If you can't stand the controls,

(Arrows to move,
Z to jump,
X to place skulls if you're on a level that gives you them, they can be used as platforms but realize that human skulls are a limited resource..!!)

..then you mostly have them to thank.

IF YOU FALL TOO FAR YOU WILL DIE.
COLLECT ALL THE CROWNS TO ADVANCE. BUT IT MATTERS NOT. YOU ARE ALONE.

Would have liked to add more.

Tools:
GraphicsGale
GameMaker8.1
FLStudio
sfxr