Singularity 2 is a possible, unconfirmed sequel to the original Singularity. Neither Activision nor Raven Software have confirmed or denied the possibility of a sequel, but it is highly unlikely as the first game did not meet the usual sale requirements. The fan community has attempted to crowd-source such a development regardless, setting up a Facebook page, Kickstarter and petition in order to raise money for such a sequel.
On March 23rd 2015, Raven Software posted an image of the Singularity box art to their Twitter account during the studio's 25th anniversary celebrations, with the comment "We're Going Back". The post initially spurred some excitement over the possibility of a sequel, but posts to their Facebook page at around the same time suggests the studio was simply looking back on the game.