Attention, Marvel Comics fans: You have only a few more hours to sign up for a chance to download more than 700 of its "#1" digital issues for free. Just head over to the sign-up page at ComiXology and register by April 9 at 11:59 p.m. ET.

This completely legitimate opportunity is being hosted by Marvel and powered by the digital comics distribution platform ComiXology. It's the comics giant's second time attempt at the promotion. Just one month ago, Marvel tried to give away free downloads of its #1 digital issues, but the designated site suffered several crashes, making it difficult for many to access the content.

This time the rules are a little different. Once registered, participants will receive an email invite from ComiXology on April 11 with further instructions on how to download the comics of their choice, and then they'll have 48 hours to download.

The comics will be available for download via the ComiXology app for iPhone, iPad, Android, Kindle Fire and Windows 8 and at They can also be downloaded from the Marvel Comics app on iPhone, iPad, iPod Touch, Android devices and online at the Marvel Digital Comics Shop.

Free stuff never lasts long. Sign up before it’s too late.

Register here.