"House of Suns" is a standalone novel set in the same universe as his novella "Thousandth Night" from the "One Million A.D." anthology. It was released in the UK on 17 April 2008 and in the US on 2 June 2009. Reynolds described it as "Six million years in the future, starfaring clones, tensions between human and robot metacivilisations, King Crimson jokes." Reynolds states that he is "firmly intending" to return to the "House of Suns" setting to write a sequel.