Previously available only as a digital download on the Xbox One, Killer Instinct Season One will finally get a disc-based, retail release on September 23, 2014. For $19.99, buyers can go to their local Walmart and pick up the Combo Breaker Edition of Season One, with a bonus code for Season Two’s TJ Combo included! How enticing. That brings the total number of playable characters to nine. Check out the awesome box art below and let us know what you think. Will you be buying it, and why? Considering that KI Season One went on sale in November 2013, you're probably wondering why it took so long for Microsoft to release a disc version. Well, the short answer is that it has been a game under development until now. It was in only May that development of the season wrapped up and all eight characters -- Jago, Sabrewulf, Glacius, Thunder, Sadira, Orchid, Spinal, and Fulgore -- were playable. More characters, features and modes will be added to the game when Killer Instinct Season Two kicks off sometime in the fall. We wouldn't be surprised if Season Two also gets a disc release.