In an interview with CBR, the duo explained that the three-part story asks what the Man of Steel would have been like if he had not been raised by the Kents.
"The Flashpoint universe in a lot of ways is a window into a world where small things have changed the characters drastically," said Snyder. "For Superman, one of the original ideas for Flashpoint was a story where we examined the idea, would he still be Superman if you change the circumstances so he doesn't have the rosy background he did with the Kents?
"We really wanted this to be a story that investigates the nature of Kal-El as the world's greatest hero, and whether or not he'd be Superman if the circumstances were drastically darker."
Francis added: "We've seen variations on that in a lot of Elseworlds, but I think we have a new spin on it."
Illustrated by Gene Ha, the miniseries ties in with DC's core Flashpoint title, which runs for five issues starting next month. The event takes place in a world where the timeline has been altered, but only the Flash and Booster Gold are aware there is a problem.
Flashpoint: Project Superman #1 arrives in stores on June 29.
> DC reveals Flashpoint tie-in titles