Tumbleweed Express is a tower defense game that takes place on a moving train set in an alternate history of the American West. Advance through 12 levels across 3 different acts as you shoot down attacking airships and other obstacles while delivering supplies and collecting mail. Complete voluntary contracts to get extra funds to use for weapon and armor upgrades, which help you make it through each level in one piece! Tumbleweed Express originated from the team’s participation in a game jam held by the DC Chapter of the International Game Developers Association (IGDA) in November 2011. Since that initial game jam, the team has dedicated one weekend a month to completing the project. In 2012 these talented developers formed an independent game studio, The Dirigiballers, LLC, that has now brought the Tumbleweed Express to life on Steam for PC, Mac, and Linux. This talk was presented at the IGDA DC monthly chapter meeting at Bravo! Bravo! on June 28th and mainly focused on the team's development process and history as a primer for a panel discussion that followed.