Line Rider Stage Perfectly Syncs Up To Mountain King
This is an odd, but strangely satisfying video to watch. Youtuber Doodlechaos has synchronized the entirety of Mountain King to a level he has drawn in the game.
Doodlechaos says in the description that he took about a month to draw the level which is perfectly synced to the song. If you don't immediately know the name Mountain King, you might best remember it from nearly every Christmas commercial about jewelry or cars.
Line Rider itself was a browser game around 2007, letting players draw lines for a character to sled down successfully. The game eventually got so popular that it received a remake on DS, but then quickly faded from public consciousness.