Here are some games released after *Sonic and the Black Knight*:
* Sonic Unleashed (2008): This game introduced the "Werehog" transformation and is seen by many as a pivotal moment in the Sonic franchise.
* Sonic Colors (2010): This Wii game features colorful levels and a new villain, Dr. Eggman Nega.
* Sonic Generations (2011): This game celebrates Sonic's 20th anniversary and features classic and modern versions of Sonic, along with cameos from other characters.
* Sonic the Hedgehog (2017): This game is a reboot of the franchise and features a new visual style and gameplay.
Ultimately, what comes "after" *Sonic and the Black Knight* depends on what you consider a sequel to be. While there's no direct follow-up, the game's story and characters have implications in other entries of the Sonic franchise.