Neverwinter Nights is a third-person role-playing video game developed by BioWare and published by Atari. Interplay Entertainment was originally set to publish the game, but financial difficulties led to a change of publisher. It was released on Microsoft Windows on June 18, 2002. BioWare later released a free Linux client in June 2003, requiring a purchased copy of the game to play. MacSoft released a Mac OS X port in August 2003.