 Cloudgine had been previously rumored to be a core part of the Xbox One software, with their software used in a technology demonstration at a Microsoft developer's conference in April 2014, demonstrating the use of cloud computer to speed up the physics modeling and rendering in a fully destructible city environment.Spencer revealed that the demo world was the start of this newest "Crackdown" title, with ability to destroy any part of the city expected to be carried over to the final game.According to Spencer, Cloudgine would help to develop the core engine, while Reagent Games, a studio located in close proximity to Cloudgine also founded by Jones, would develop the gameplay and art assets for the game, with Sumo Digital developing the game's campaign mode and Elbow Rocket (with assistance from "Crackdown 2" developers Ruffian Games) developing the multiplayer.