2009 IGF Announces Call For Submissions, New Judges, Awards Think Services, organizer of the Game Developers Conference (GDC), is pleased to announce that submissions are now open for the 2009 Independent Games Festival (IGF). Submissions to the 11th annual festival are due by November 2008, with finalists to be announced January 5th. Games selected as finalists will available in playable form on the GDC show floor and will compete for nearly $50,000 in prizes, including awards for Innovation, Excellence in Design, and the coveted $20,000 Seumas McNally Grand Prize.