10 Greatest Comic Books We Never Got To See

One of the greatest 'what ifs?' in comic book history, Alan Moore's Twilight of the Superheroes proposal could have been the old maestro's great send-off from the superhero comics genre (assuming, of course, that in this continuity he didn't make sporadic returns after his multiple dramatic 'retirements').

Coming at the end of Moore's legendary 1980s run - hot on the heels of Watchmen - Twilight of the Superheroes would undoubtedly have been another defining moment in a decade in comics which was full of them.

Those who have read Moore's 18,000-word pitch for the story will find themselves sorely wishing it had been realised. They will also, however, recognise clear derivations of Moore's ideas surfacing in several DC stories since, most notably Mark Waid and Alex Ross' seminal Kingdom Come.

It is - in typical Moore fashion - a story with many moving parts, with complex interweaving narratives, factions, worldviews and tragedies competing. Providing a summary here would quickly turn this entry into a convoluted series of digressions. Suffice it to say, it was intended to be an epic of mythological proportions, providing an out-of-continuity hypothetical endgame for the DC Universe, told through the eyes of John Constantine. If only.