Red vs. Blue: Season 9 is a machinima web series created by Rooster Teeth Productions. It was first announced with a trailer, originally debuting at PAX East 2011, and online March 28th, 2011 thereafter. It is the first season to follow two apparently separate storylines. The first details events taking place inside the Epsilon Unit, within which Epsilon relives his memories of Blood Gulch, depicted via the Halo: Reach engine. The second storyline is a prequel to The Blood Gulch Chronicles, detailing events of Project Freelancer and its agents, depicted using pre-rendered CGI, allowing for action sequences and settings outside of the maps provided. The DVD was released on November 15, 2011. It is the ninth full season of Red vs. Blue.