Your goal is to rearrange the building blocks to match the pictures at the top of the screen. To move a building block, Left Click on it to select it, then click on an empty space or another building to move the block there. When you make the correct layout for a building, it will turn green, and you can no longer move its blocks. 

There are a few rules for how buildings are constructed:

• You can only move a building block onto another block of the same color or an empty space.
• You can never place a large block on top of a smaller block.