From certain levels you can begin to unlock a series of items that will allow you to expand your domains in the game There Day and have a more powerful farm. One of these items is the map piece, and if you want to know what it is used for then you can't miss this Mobailgamer post we made for you.
What is the map piece used for in Hay Day?
Unlike Blue Plans and Expansion Permits, Map Pieces can be purchased with Coins, for a price of 450 Coins per unit.
the map pieces are used to expand the village of Hay Day. That is its main function.
You can also get them for free by opening mystery boxes and mystery packages, serving town visitors, and watching trailers on movie night.