Although he claims credit for coining the phrase "interactive entertainment," this claim is certainly untrue. Halpin previously founded and was the publisher of GameDaily, the category's primary daily news outlet and career site and job board, GameJobs.com, which remains a staple HR tool serving the trade. Halpin also re-published David Sheff's "Game Over", a book on the history of the video game industry considered by many to be the "Bible" of the video game business and re-launched the industry's first charitable organization, Games for Good.