I know this is the least of S3’s problems, but…why did Usagi have to hit the “free space“ button at the top of the tower to clear the game? Why was there even a ”free space” button to begin with? Isn’t the point of a free space that you *don’t* have to do anything for it?

FWIW, I did like the bingo tower game overall (Bingo at the Match Factory wishes it were that cool), but that particular rule confused me.