This game looks really nice, but sadly I could not find a second person to play it with locally.
I tested it a bit while playing both characters, but that quickly gets unmanagable. The main mechanic is pretty neat, but I could not test it fully. I hope your submission did get enough ratings!
Some small bits you might want to add if you continue to work on this: Control descriptions for the characters (i had to guess that Y moves pages); A small ready screen so you know who is controlling what. Further, is it intended that you cannot jump through wooden platforms from the bottom?