There's something inexplicably thrilling about getting a new game, but how about getting two new games in one? We bet you're giddy already. The next announcement might just tip you over the edge: Professor Layton and the Last Specter is coming to North America on 17th October and contains a bonus game.

Layton's had bonus games before of course, but nothing on this scale. Unlocked from the start of the top hat professor's latest adventure is Professor Layton's London Life, a 100-hour long RPG that started life as a mobile game in Japan before being integrated into this fourth outing. In Japan you have to unlock it by completing the game: in North America, it's available from the very start.

We told you it was exciting.

Professor Layton and the Last Specter for the Nintendo DS family of systems is the fourth installment in the Professor Layton puzzle adventure series. It begins a new trilogy that is a prequel to the original games, set three years before the events in Professor Layton and the Curious Village™. The game contains more puzzles than any in the series to date. As a North American exclusive to the overall Professor Layton and the Last Specter package, a bonus role-playing game called Professor Layton’s London Life™ containing more than 100 hours of additional content will be available to players from the start of the game.