The second Professor Layton game, Professor Layton and the Diabolical Box (Layton Kyōju to Akuma no Hako), debuted for Nintendo DS in Japan in 2007 and in North America and Europe in 2009.
Level 5 released Professor Layton and the Diabolical Box HD for Mobile (Layton Kyōju to Akuma no Hako EXHD for Smartphone), an iOS and Android port of the second Professor Layton game, in English on Thursday.
A smartphone port of the first game, Professor Layton and the Curious Village, debuted in June.
The official YouTube channel for the Professor Layton franchise is streaming a trailer for the game.