To support D&D 3.5, Wizards of the Coast released a free series of short “Original Adventures” through their website. The series was launched in early 2004 with Miguel Duran's The Burning Plague, designed to be playable with just the Player's Handbook and suitable for four to six 1st-level adventurers. It's since been re-released through DriveThruRPG and can be purchased for $0.99.
