May 2, 2015 8:41 AM EDT

It’s like Christmas in May for comic fans: today is Free Comic Book Day.

You can check here to see which of your local stores are participating, but remember, you can’t just snag any title you want—here’s a list of the 2015 giveaways.

In the promotional video above, an owner of a comic store explains that Free Comic Book Day is a great way to promote comics as an art form as well as get children interested in them. But it’s also good business for comic books—Free Comic Book Day is often one of the biggest sales days of the year for comic shops.

Write to Tessa Berenson at tessa.berenson@time.com.

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