Achievement Hunter is an American video gaming division of Rooster Teeth Productions. Founded by Geoff Ramsey and Jack Pattillo on July 6, 2008, the website is largely based on the achievement mechanic found in seventh and eighth generation video game consoles. Since its founding, Achievement Hunter has grown to become a core component of Rooster Teeth, hosting a wide variety of videos related to video games. Achievement Hunter videos are currently hosted by six main members: Geoff Ramsey, Jack Pattillo, Gavin Free, Michael Jones, Ryan Haywood, and Jeremy Dooley. While most videos feature these six 'core' members of Achievement Hunter, other staff also make regular appearances.