All options to save City of Heroes have been exhausted, says publisher NCSoft.

In a statement to fans petitioning to keep the MMO alive, NCSoft expressed its regret at the circumstances which led to the game’s shuttering.

“We wanted to let you know that your voices have been heard and your concerns have been taken into serious consideration. We appreciate the overwhelmingly constructive and positive messages in the emails, notes, and packages you’ve sent in support of the game,” it said.

“It has not been an easy decision for us to close Paragon Studios and prepare to shut down City of Heroes. We’ve exhausted all options including the selling of the studio and the rights to the City of Heroes intellectual property, but in the end, efforts to do so were not successful. City of Heroes has a special place in all of our hearts, and we want to ensure its reputation and the memories we share for the game end on a high note.”

City of Heroes fans gathered over 20,000 signatures in an attempt to keep the long-running MMO alive following the September announcement of its closure.

The game ran on a subscription model, with a limited free-to-play option added in 2011.

Its servers will shut down on November 30.