When you advance in the light, you see where you go and what you do. Once the light goes off and you find yourself in the dark, things get much more complicated. You must learn to steer without falling and to avoid all the dangers that are hidden, dissimulated in the darkness.
Sometimes you can see the platforms under the light before they gradually disappear and you must reach the exit of a level before it is completely in the dark. This is the case in the game Make Friends Don't Bake Them, in which you control a blue stickman who must quickly reach the exit if it does not want to die, killed by the darkness.