Winter Stacker unblocked puzzle game is very interesting for kids to play online at school. Before you place anything in the level, you should take a look at the wind indicator which showing the wind direction and power. This detail is extremely important in the Winter Stacker. After that, you can drop the given items. Be careful! The spherical objects can roll easily. Try to use the others to block them! If you allow them to fall, you will lose. Good luck!