Big Gigantic have announced a Rowdytown Pre-Party at The Fillmore Auditorium in Denver Co for September 27. The new show was added after Rowdytown, which takes places September 28 at Red Rocks, sold out a month in advance.

A limited number of presale tickets went on sale today for $35 via Thissongissick.com, but tickets will be on sale to the general public starting tomorrow at noon MST.

This 2013 Rowdytown will feature a headlining performance by Big Gigantic, as well as sets from Adventure Club, Carnage and Manic Focus. The event will also feature state-of-the-art projection mapped LED visuals.