Chair Entertainment’s first ClashMob Special Event for Infinity Blade III ($6.99) kicks off this Friday December 13th, and ties into the upcoming film 47 Ronin from Universal Pictures. ClashMob participants will need to collaborate to take down the massive Samurai Brute, and if they’re successful, will unlock the Brute’s sword in their inventory for use in the rest of the game. According to Chair, this will be the only opportunity for players to obtain the Samurai Brute’s sword. You can catch a glimpse of the Samurai Brute as well as a glimpse of the 47 Ronin movie in the following trailer.

While the actual ClashMob Special Event won’t kick off until Friday, you can pre-register for the event right now by accessing the ClashMob event from the world map in Infinity Blade III. The event will run through Tuesday December 24th, with 47 Ronin opening in theaters the following day on Christmas. Also, you’ll have to have installed the latest update for Infinity Blade III, Soul Hunter, in order to participate in the ClashMob. If you’ve been enjoying the latest Infinity Blade game on your iOS device, then definitely check out the upcoming ClashMob event and take a stab at unlocking the exclusive Samurai Brute blade.