HD Gameplay of Killer Instinct 2013 Played on Xbox One S Please Like And Subscribe Thanks For Watching!! Road To 100 Subscribers Killer Instinct is a fighting video game, the third in the Killer Instinct series, originally developed by Double Helix Games, followed by Iron Galaxy under supervision of Ken Lobb and Rare, and published by Microsoft Studios, released as a free-to-play launch game for the Xbox One in 2013.