Tim Lindquist is the founder of multiple video game publications including Hardcore Gamer Magazine and Onionbat Books (formerly DoubleJump Books). DoubleJump Books is a strategy guide publisher responsible for the guides of games such as Disgaea: Hour of Darkness and Genji: Dawn of the Samurai. He founded Hardcore Gamer Magazine in 2005, which ran for 36 issues and has since spawned a website. Before DoubleJump Books, he co-founded GameFan with Dave Halverson and Greg Off.