---How to play---

1. Choose one from 12 types of blocks on the right side of the picture. Then push the mouse button on the block you choose.
   
2. Keep pressing the mouse button, carry the block on the grid of the left side.
   
3. Release the mouse button at the place on the grid where you would like to put it.
4. Place and pile up blocks freely with the processes 1,2 and 3.
5. If you want to re-build blocks, you have to clean up everything. Click and replace from the beginning.
6. When you complete, click . Then enjoy watching the drawings controlled by the blocks you build.