Hey, remember that kid who never posts?

[Gameboy]

EDIT: wow thats trippy on the eyes, if you keep your eye on 1 mountain while it moves your eyes wont hurt as much and the effect will be more apparent, its usually done much smoother, but I wasn't willing to do 60 frames, it'd take hours, its easier done in the draw code of the game its intended for.
quick whip up for an example
Here are the layers (clouds are same colour as the background, hard to make out as is)

Spoiler

I also simplified the layers so it looks more pixel-ish