Atlus VP of sales and marketing Tim Pivnicny, issued a statement to Game Informer today (April 11) stating that the game's servers will shut down on May 31.
"It has been a tremendous honour and privilege for all of our staff at Atlus to have been involved with so innovative and groundbreaking an interactive entertainment experience. It was also of the utmost importance for us to sustain the game's online experience as long as possible, even beyond the point at which sales could help to offset the expense," he said.
"Regrettably, the online servers cannot be sustained forever and now the end draws near."
Demon's Souls had a unique online component where users could see the ghosts of other players in the world and leave hints for each other warning of enemy ambushes or strategies.
Users could also invade the games of other players, either helping or hindering their progress. A global world tendency would fluctuate between white and black depending on player actions, determining the strength of enemies throughout the game.
Atlus will hold two final world tendency events prior to the server shut down between May 1 and 15 and May 16 and 31. The world tendency of each event will be determined by a fan vote.
Atlus had previously extended the servers for Demon's Souls past their originally scheduled shutdown date of last October.
Demon's Souls can still be played as a single player game after May 31.
Namco Bandai announced today that it is bringing Demon's Souls' spiritual sequel, Dark Souls, to PC in August.
> Digital Spy reviews Demon's Souls
Watch the PC announcement trailer for Dark Souls: Prepare to Die Edition below: