Level 5 had a game in development for the Nintendo DS titled Mystery Room. That game is now titled Layton Brothers: Mystery Room, and is being developed for iOS platforms instead, with no announced release date.
So, why the name change? Because one of the two main characters in the game is Professor Layton’s son! His name is Alphendi Layton, an investigator working at Scotland Yard. Alphendi is teamed up with Lucy Creila in Layton Brothers.