"Pokemon Brilliant Diamond/Shining Pearl" is still "really fragrant" for many players, but the quality is really not very good, and even counts as a failed remake of the last film. Recently, a blogger @Lewchube posted that the actual development time of Pokémon: Crystal Diamond/Brilliant Pearl is actually only one and a half years.
The blogger said that Pokémon producer Shunichi Masuda goes to ILCA, the outsourcing company of Pokémon: Crystal Diamonds/Bright Pearls, every week for about two years. Then calculate about two years, combined with the game release date (November 19, 2021), the actual development cycle of the game is only about one and a half years (March 2020 - November 2021).