Earth's mightiest super heroes - the Avengers - finally get the big-book treatment that fans have been waiting for!AVENGERS EXPANSION features many of Marvel's most popular super heroes - like Black Widow, Captain America, Hawkeye, Iron Man, Hulk and Thor - plus countless others Avengers and their most villainous foes.It also includes rules for how to craft iconic weapons (like Cap's shield or Thor's hammer), build your own headquarters (like Avengers Tower), and handle battles between large groups of foes.Get your players together. It's time for your Avengers to assemble!