Atlus has today revealed that the quite difficult action RPG Demon's Souls is now available on the PlayStation Network, and with it a week-long celebration titled 'World Tendency Event'. The event will see servers set to Pure White, which will see changes to the gameplay including an easier difficulty setting, where enemies will have decreased HP, attack power, and defense, while players will inflict more damage when attacking.

Demon's Souls brings revolutionary online features support with seamless interconnectivity
to enhance the single-player game. Team up with two other players in simultaneous cooperative play, working together to topple some of the game's colossal bosses, or force your way into the games of skilled players and challenge them to PvP battle. Leave hints and clues for those who will follow in your footsteps; either intentionally or through your own inadvertent demise, your bloodstains will allow your successors to view a replay of your death, hinting at how to avoid your gruesome fate. Unprecedented in its depth and subtlety, peerless in its relentlessly challenging gameplay, Demon's Souls is the ultimate action RPG.

Demon's Souls has been priced at $19.99 and is available only on PlayStation 3.