You are the evil Ninja Spider and you must eat all the pretty fireflies
of each levels.
Click to jump. Keep the button pressed to roll, release to stick to
walls, but each material has special properties. (avoid sand, water and
slippery moss). The space key allows to control the view with the mouse.
There is a jump counter, you may try to minimize this number, but that's
just a suggested challenge. 'R' to retry the level.