Demon's Souls (デモンズソウル Demonzu Souru?) is an action role-playing video game developed primarily by From Software with assistance from SCE Japan Studio exclusively for the PlayStation 3. It was released in Japan on February 5, 2009 and published by Sony Computer Entertainment. In North America the game was released on October 6, 2009 and published by Atlus; Namco Bandai Games published the game for Australia and Europe on June 23 and June 25, 2010, respectively.
Set in a dark fantasy world, players take control of a hero who has journeyed to the fictional kingdom of Boletaria, which is being ravaged by a cursed fog that brings forth demons who feast on the souls of mortals. The game has been described as a spiritual successor to the King's Field series of games. The gameplay involves a character-creation system and emphasizes gathering loot through combat with enemies in a non-linear series of varied locations. It has a unique online multiplayer system integrated into the single-player where players can leave useful messages and warnings for other players' single-player game worlds, as well as joining other players in their world to assist and/or kill them.
Upon its release in Japan and North America, Demon's Souls was met with acclaim from critics, winning numerous awards. The game was praised for its dark fantasy art design, variation in combat choice and integrated online interactions. The game is particularly notable for its high difficulty level, with many critics noting it as a genuine challenge. The game has a spiritual successor titled Dark Souls.