New Entertainment Research & Development was a development division within Sega that was founded on April 1, 2005. It consisted of staff from Amusement Vision. On May 1, 2008, it was renamed Sega CS1.

Games by Sega NE R&D
2008
Action RPG. In 1605, the rōnin Miyamoto Musashi stands up for the people of Japan.

2006
Open World Action RPG. Kiryu and a detective named Sayama uncover a conspiracy related to the massacre of the Jingweon mafia.

2005
Open World Action RPG. Kiryu is imprisoned for a murder he didn't commit. He finds a conspiracy involving his crush's daughter.