Sonic and the Black Knight is an action-adventure game developed by Sonic Team and published by Sega for the Nintendo Wii. Released in 2009, it's part of the Sonic the Hedgehog series. The game merges Arthurian legend with the Sonic universe, introducing swordplay for the first time in a Sonic game. Players control Sonic as he is summoned to the world of King Arthur to defeat the corrupted king and restore peace to the kingdom. It features a unique blend of high-speed platforming and sword-wielding combat.