All levels unlocked.
Place every block from the queue in such a way they don’t fall off the screen.
You can use nails to fix blocks, but note: nailed blocks can rotate around the nail!
Use mouse to place blocks on the stage.
Where nails are available:
ctrl + click creates an object and nails it.
shift + click creates a single nail, that allows fixing arbitrary objects.
Press “[” and “]” to switch songs.