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 began streaming a commercial on Thursday for Layton Kyōju to Akuma no Hako EXHD for Smartphone, an iOS and Android port of the second Professor Layton game.
A smartphone port of the first game, Professor Layton and the Curious Village, debuted in June.
The game launched in Japan on Wednesday, and is on sale for 960 yen (about US$8.50) until March 4.