From April 14 to August 4, 2013, the Museum of Fine Arts, Boston, partnered with HappyGiant LLC, to develop a free, bonus boss-battle level of the video game, Usagi Yojimbo: Way of the Ronin to promote the exhibition, “Samurai! Armor from the Ann and Gabriel Barbier-Mueller Collection.”

The game, based on Stan Sakai’s award-winning comic series about a samurai rabbit, is no longer available here for free download.

During the exhibition’s stay at the MFA, museum visitors were encouraged to find the passcode within the exhibition to unlock the bonus level of the game and Usagi’s special armor, inspired by the real thing in the show.

The “Samurai! Armor from the Ann and Gabriel Barbier-Mueller Collection” exhibition is now closed and on its way to the next stop on its tour, the Portland Art Museum in Oregon.