Below is a list of all the other unlockables available in Professor Layton and the Last Specter:
Layton Life (Japanese version): Complete the story.
Mouse Alley Minigame: Collect 10 mouse badges by tapping mice running on screen, solve the Luke Foretells mystery and talk to Fische at the Crossroads.
The Biologist's House: Beat the Laytonmobile Cove fish tank mini-game.
The Boatman's House: Complete all Toy Train mini-games.
The Flute Player's House: Complete the game.
The Puppeteer's House: Complete all puppet shows.
The Puzzle Master's House: Beat 167 puzzles.
Added by: MongooseGeneral Oct 26th 2011, ID#16326