They make a Shadow the Hedgehog game but not a Knuckles the Echidna game.
Shadow the Hedgehog - Xbox BLACK LABEL - Great Condition - CIB - Shipping Today 10086640649 | eBay
Throwback time! This is Shadow the hedgehog! People are mixed on this game and I can understand it. It plays janky/Buggy (like most Sonic games). However, I really like this game! I
Petition · Sonic Heroes, Shadow The Hedgehog & Sonic The Hedgehog (2006) For Xbox Series X/S · Change.org
Shadow The Hedgehog 2 Xbox 360 Box Art Cover by D@RKZER012
Shadow the Hedgehog (Microsoft Xbox, 2005) for sale online | eBay
SHADOW THE HEDGEHOG XBOX / X BOX 360 SONIC | eBay
Shadow the Hedgehog (Original Xbox) Game Profile - XboxAddict.com