Hardcore Marvel fans may want to clear their schedules through Tuesday, because as announced today at SXSW 2013, the publisher is posting more than 700 of its #1 issues to read for free on the Marvel Comics app and through the Marvel Webstore (a.k.a. Marvel Unlimited) for a limited time. Set to run from today, March 10 through 11 p.m. EST on March 12, "Marvel #1" is designed to give fans maximum comics context for the publisher's current biggest characters. In other words, readers will have plenty of Avengers, X-Men, Spider-Man, Guardians of the Galaxy, Thanos and Iron Fist material to explore. We're going to get some angry e-mails from employers stricken with sudden vacation and sick day requests for sharing this information, aren't we?Marvel's careful to point out that the digital "#1" event will also house many of its Marvel NOW! #1 issues in an effort to give readers a contemporary jumping-on point rather than just classic (and in some cases, now heavily retconned) material.

You can browse the full #1 offerings via Marvel Unlimited, and check out a few titles guaranteed to be in the mix, below.