

This is an old version of the puzzle "intro" screen used to show puzzle number and title. It's most likely a old design for the trunk. But for some reason this file was kept in the game's data with the Japanese button. This puzzle is present in the translated version of the game, in the same way (unchanged). The bare-bones look of this graphic suggests it's an older version used during development of the puzzle. The filename "virus_bg.arc" suggest this is the input screen for Puzzle 26. Some leftovers from the Japanese version of the game exist in the data.

Professor Layton and the Curious Village might have been a rebranded Atamania game, just like Layton Brothers for iOS (originally Atamania Mystery Room).

#TCRF PROFESSOR FIZZWIZZLE SERIES#
That concept was revived in 2009 after the release of Layton 4 when Level-5 released the Tago Akira no Atama no Taisou series under the Atamania label: these were four casual puzzle games with less focus on plot which used the DS sideway orientation from Brain Age. Producer Akihiro Hino mentioned in an interview that the original Layton concept was more of a clone of Brain Age. The most intriguing part is probably an even earlier Japanese title screen, with a completely different title (多湖輝の頭の体操 EX, Tago Akira no Atama no Taisou EX, Tago Akira's Mental Gymnastics EX) with the Akira Tago copyright (In the final, he is not mentioned in the title screen, but rather in the credit roll). There is also an old version of the title menu still present with the file-name "temp_select2.arc", indicating it most likely is a placeholder. This is certainly not the only DS game to have its graphics from the JP version left unused on the localized versions: The odd thing is that an early JP title screen with the 2006 date can be found the game was released in 2007 in Japan. The altered puzzles, some of which can be solved without any prior knowledge of Japanese.
