Way back in the day, when we first shipped Team Fortress 2 as part of The Orange Box, we'd always planned on it being an ongoing project. But even we had no idea that, six years later, we'd be over four hundred updates strong, with a growing community of collaborators and no signs of stopping. Take a scroll down memory lane at the many tweaks, fixes and epic improvements that have made TF2 the world's #1 war-themed hat simulator.