Scrabble for ipod nano gone disappeared. Any ideas?

The paid version of Scrabble for my 4th generation nano ipod is no where to be found. I do not see a version of Scrabble that indicates it can be played on the ipod nano listed anymore in the App store. What's up with that? I paid for it so it seems to me I should have it but it is gone now. I am not sure exactly when it disappeared as I only just noticed it missing on my last sync. Any ideas how I can get it back? Is it not available anymore?