Steam News announces a free weekend is underway in Borderlands 2, Gearbox Software's humorous role-playing shooter sequel. Those who do not own the game can play for free from now until Sunday at 1:00 pm EDT, and for those who get hooked, the game is also now on sale for 75% off. Also, Steam News announces that pre-purchases are now being accepted for Borderlands: The Pre-Sequel, noting that a 10% discount is offered to those who already own either of the first two Borderlands games.