Kill Strain, an upcoming competitive free-to-play game, was announced at the first annual PlayStation Experience keynote. The game is a top-down competitive 5v2v5 multiplayer experience, where enemies can quickly become teammates. Kill Strain is expected to release sometime next year, with a beta starting during the early half of 2015. 

An early build of the game is playable at the PlayStation Experience this weekend, and more information can be found at the official website.