"The Zombie Island of Dr. Ned" is the first installment of downloadable content (DLC) for "Borderlands" and includes new quests, items, and enemies—including WereSkags and various zombies. The storyline takes place in an area known as Jakobs Cove which is a small town built by the Jakobs Corporation. Dr. Ned had been in charge of keeping the workers of Jakobs Cove alive, but ended up transforming them into zombies. The main plot revolves around finding previous visitors to Jakobs Cove and investigating Dr. Ned himself after the Jakobs Corporation become suspicious of his work. The playable area includes a large outdoor map with several further areas branched from the main zone—including a dark, abandoned version of previous area 'Old Haven'. The installment was released for the Xbox 360 and PlayStation 3 versions on November 24, 2009, which was celebrated with a trailer. The PC version was released via Steam with SecuROM on December 9, 2009.