The Professor Layton (レイトン教授 Reiton-kyōju) series is a puzzle video game series for the Nintendo DS and Nintendo 3DS developed by Nintendo and Level-5. The series currently consists of six games and one film, with at least one more film in working development. Level-5 has also discussed a third trilogy in the works. The first three games are about Professor Layton and Luke's adventures together and their eventual parting of ways. The next three games and the film are prequels and are about how Luke and Layton met and their "original" adventures.