Developers Headcannon delivered an amazing mix of modern and retro with 2017's Sonic Mania. The studio apparently tried to do it again but with the NES classic Darkwing Duck. Unfortunately, the pitch was never accepted, but the developers released video of what could have been.
Darkwing Duck writer Aaron Sparrow revealed on Twitter that he and Disney comic artist James Silvani and Headcannon pitched Capcom on a sequel to the 1992 NES game. Sparrow said that the project would have tried to include as many of the original voice cast from the Darkwing Duck series, but ultimately Capcom passed on it.
You can see the proof in a video Sparrow shared online. Like Sonic Mania, the game is done in a modernized style of the original NES game complete with pixelated graphics and old-school music.
The short concept can be downloaded on Headcannon's website here as a playable pitch. Unfortunately, since the project was never approved, the demo was never finished. So the final product remains just a very short fan project.
It was conceived as a spiritual successor to the original NES game (unless Capcom wanted to go full “DuckTales Remastered” with it.) It was planned to take place between the show and “The Duck Knight Returns”, with Steelbeak, Taurus Bulba, and the Fearsome Five as the villains.— Aaron Sparrow (@Aaron_Sparrow) January 7, 2019
The last time Capcom released a Darkwing Duck game was back in 2017 when it released The Disney Afternoon Collection. The six-game collection included NES classics like Chip 'n Dale Rescue Rangers, Ducktales, Darkwing Duck, TaleSpin, and more.
Aside from the collection there hasn't been any word on a new Darkwing Duck game. Maybe the video published by Sparrow will renew interest in the project, much like how the Deadpool film moved into production after somebody "leaked" the film's test reel.