Professor Layton and the Last Specter

 (knwon as Professor Layton and the Spectre's Call in PAL regions) is a puzzle game developed by LEVEL-5 and released by LEVEL-5 on November 27, 2009 in Japan and by Nintendo on October 17, 2011 in North America, on November 25, 2011 in Europe and on December 1, 2011 in Australia for the Nintendo DS.

The game featured additional weekly puzzles, which were released on Sundays for many weeks via Nintendo Wi-Fi Connection.

With the discontinuation of the Nintendo Wi-Fi Connection services in May 20th, 2014 these bonus puzzles are no longer available for download. They were actually unlocked, rather than downloaded, meaning all the data is already present in the game.