Braid is an indie puzzle-platform video game developed by Number None. The game was originally released in August 2008 for the Xbox 360's Xbox Live Arcade service. Ports were developed and released for Microsoft Windows in April 2009, Mac OS X in May 2009, PlayStation 3 in November 2009, and Linux in December 2010. Jonathan Blow designed the game as a personal critique of contemporary trends in video game development. He self-funded the three-year project, working with webcomic artist David Hellman to develop the artwork.