I picked up Professor Layton and the Diabolical Box along with Dissidia: Final Fantasy on the 25th.
And now 5 days later (the 30th), I've just completed Professor Layton and the Diabolical Box.
All 138 Puzzles in the story and Puzzle # 139-153 in Layton's Challenges.
... Now I gotta pick up a copy of the first game, Professor Layton and the Curious Village, if I wanna get the password to unlock The Secret of the Elysian Box Hidden Door...
So I'll do that while I wait for Nintendo to release the Weekly Puzzles.
My Final Score:
5500 Picarats
Found 226 Hint Coins
... Maybe I should start a new game so I can go and find the 4 Hint Coins I missed ...