Professor Layton and the Unwound Future [GAMES]

I recently completed Professor Layton and the Unwound Future.  I played it a few puzzles at a time and it took (according to the game) about twenty hours.  The mystery in this one is Layton receives a letter from the future, uses a time machine, and appears in a strange London ten years in the future (where Luke is now an adult).  As with previous games in the series, the plot is full of major (and larger-than-life) twists, but the core characters remain charming.  The puzzles in this one were, with one or two exceptions, quite fair; and the limited hint function keeps any single one from becoming too frustrating.  All in all, good stuff, and I'm looking forward to The Last Spectre.