Puzzle Count in Professor Layton and the Unwound Future

135 puzzles in the main game:

• 100 Story Puzzles — encountered during narrative.
• 35 Bonus Puzzles — unlocked after credits (Puzzle Master's House).

Weekly Downloadable Puzzles (Nintendo Wi-Fi Connection): 33 additional puzzles released weekly post-launch. Service ended 2014; now accessible via homebrew (Twilight Menu++ / nds-bootstrap) or fan patches that inject them into the ROM.

Total unique puzzles: 168 (135 + 33 weekly).