Talking about a possible sequel to the film, Munroe said:

The ending contained a hint at a possible further sequel.

A possible sequel has been in the works since 2007, but nothing definitive had been reported until August 2011.

Tom Hardy said he and the rest of the cast had signed on for possible sequels, but is unsure if there will be any.

Let us ponder a possible sequel on the subject of thread theory.

A trailer of a possible sequel of the game was released.

This appears to be the only hint to a possible sequel in the game.

The film was produced as a way for a possible sequel to the series.

On the same day, Collider.com mentioned that the ending lends itself to a possible sequel.

The game ends on a note that, "and so the war begins," implying a possible sequel.