Comics brand Marvel has launched a new iPhone and iPad app called Marvel AR, which uses augmented reality technology to offer fans extra content including videos, artwork and character biographies.

“By opening the app and scanning select Marvel products featuring the Marvel AR logo, you’ll unlock exclusive content starring the world’s most popular super heroes,” explains its App Store listing.

Characters featured include Iron Man, Thor, Captain America, Spider-Man, Wolverine and Hulk. The content includes 3D shorts, video recaps, character biographies, exclusive commentaries and artwork, and script excerpts.

The app is free to download, and uses British startup Aurasma’s AR tech. It joins the Marvel Comics app, an app for buying and reading digital comics, and games based on Captain America and Thor. Parent company Disney also recently released Avengers Origins: Hulk, a book-app based on the origin story of that character.