Double Helix Games was formed in 2007 via a merger between two Foundation 9 studios, The Collective and Shiny Entertainment. Double Helix Games cites on their website that the combined development experience totals 20+ years and that it is one of the largest and most experienced game developers in the world. Double Helix Games also states on their website that they are a developer for all the major home consoles and that they have worked with numerous notable IPs such as Star Wars, The Matrix, Indiana Jones and Buffy the Vampire Slayer.
Double Helix Games began using the HEX Engine for their upcoming titles on the Xbox One, PlayStation 4, and PC. The third entry in the Killer Instinct series was the first of these titles released that uses their new engine.
In February 2014 the company was acquired by Amazon.com  In a statement released to Polygon Microsoft stated that they'd be working with a "new development partner" on Double Helix's Killer Instinct title going forward.