Neverwinter Nights 2: Storm of Zehir hearkens back to the days of the Baldur's Gate and Icewind Dale franchises by including full party customization, dungeon crawling, and free exploration of a non-linear game world via an Overland Map. The gripping storyline foreshadows the events that take place in the Forgotten Realms with the release of the Fourth Edition of Dungeons & Dragons Roleplaying Game. Storm of Zehir is developed by Obsidian Entertainment and published by Atari.