at the start of each level, there a little pile of stones where you can go to that let you move 1 block in the upcoming level. every player can do this and it affects the level for all future players.
But then what is it for? Isn't it logical that players would start destroying the game instead of making it easier? And even more so, this is too unfair a mechanic, when instead of trying to complete the level on their own, the player simply breaks it.