There are a number of object that simply get in your way. Some of these things you can move, some you can't. Things like blocks, and marshmallows are like that. Other things are more sophisticated - for example, there are one-way arrows, which can prevent you from moving in a certain direction. There are also other objects like roller skates, which, when pushed, keep moving until the strike something. Other obstacles such as ramps redirection other moving objects. Sometimes you can combine obstacles to form something else - for example, move the cork into the hole and it becomes normal floor. Push the two halves of the broken toy box together, and it becomes a whole. Move the vertical boring machine to the "X" and it will dig up, well you get the idea.ソ