Millarworld Reading Order
According to Mark Millar, all of the titles that are part of his created-owned imprint Millardworld, take place in the same continuity. It may be confusing at times, but it’s because some of the stories are fiction in this fictional universe–like the Jupiter’s Legacy stories.
Launched in 2003 with the miniseries Wanted, the Millarworld imprint published all of Mark Millar-created series and the works of some authors who write stories in his universe (like with the Hit-Girl series). Millar worked with popular artists to give life to his stories like John Romita Jr. (Kick-Ass), Frank Quitely (Jupiter’s Legacy), Greg Capullo (Reborn), Stuart Immonen (Empress, The Magic Order 2), Rafael Albuquerque (Huck, Prodigy), Olivier Coipel (The Magic Order), Pepe Larraz (Big Game), Dave Gibbons (Kingsman: Secret Service), and a lot more.
Most of those series work as standalone. In fact, the links to the other parts of the Millarworld are often limited to easter eggs or one-line references. However, the Big Game series is a crossover that connects a lot of the previous series (Hit Girl, Empress, Kingsman, The Chononauts, Kick-Ass, Nemesis, Huck, The Magic Order, and more). With that, the idea of reading the series in a certain order started to make sense.