Currently I have been playing "Professor Layton and Specter's Call" (or The Last Specter
for the US version) on my newly purchased 3DS (Cosmos Black version of
course!). 
Specter's Call, like the other Prof. Layton games is all about
the puzzles and the absorbing storyline. The one I'm playing now
revolves around a town called Misthallery where a mysterious giant has
been terrorising the town. Your job is to discover who... or what is
behind it by speaking to the quirky townfolk and obtaining clues by
solving their puzzles.
There are approximately 170 puzzles that are
obtained by Misthallery's people, plus a bunch of hidden puzzles, mini games and trophies to grab along the way.The difficulty level of the puzzles
fluctuates throughout the game - so it doesn't seem to get difficult the more you progress. With each puzzle there is the opportunity
to grab Picarats - which are the puzzles' score rating. The higher the
Picarat score the harder the puzzle and with these points you are able to
unlock in-game bonus features. Savvy!During the game there are also some very nice animated cut-scenes that help build the story. I am thoroughly enjoying this game and play it every day in my lunch and tea breaks at work.