According to the game's director and producer Hiroshi Yoshimura in YouTuber Paolo fromTOKYO's "Day in the Life of a Japanese Game Programmer" video, it took the development team of 200 people up to five years to make the game after they first planned it. He also revealed in the video that they would continue to update Code Vein by listening to user feedback as well as making new downloadable content.
Contributed by ProtoSnake