Retailers ordered more than 4.6 million comic books for the May 4 Free Comic Book Day, a 34-percent increase from last year -- and a staggering 70-percent jump from 2011. Needless to say, that's a record high for the 11-year-old event.

According to Diamond Comic Distributors, this year also will see nearly 2,000 retail accounts participating, still another record. The event coincides with the North America premiere of Marvel Studios' Iron Man 3.

Gold-level comics include Marvel's Infinity, by Jonathan Hickman and Jim Cheung, described as "the opening shots of the war that will be heard around the galaxy" -- likely to appeal to those Iron Man 3 audiences -- and DC's Superman Special Edition, which boasts a preview of Scott Snyder and Jim Lee's Superman Unchained.

Other offerings range from The Walking Dead (a new Tyreese story, paired with reprints of Michonne, The Governor and Morgan stories) and Ape Entertainment's Sesame Street & Strawberry Shortcake to Archaia's Mouse Guard/Rust flip book and Dark Horse's Star Wars/Captain Midnight/Avatar sampler.See the complete list on the Free Comic Book Day website.