FirstBus extended branding WiP is a free mod for Bus Simulator 21 designed to enhance the gaming experience with a variety of branding options for FirstBus companies. This mod includes wraps for numerous bus services such as EssexBus, CityRed, and AirLink, among others, providing players with an extensive range of visual customization. The mod features multiple color variants and decals, allowing for a personalized touch to the buses, which contributes to a more immersive simulation experience.

In total, players can access wraps for various regions, including Southampton, Bristol, and Glasgow, as well as unique decals that represent different bus services. The mod creator is open to suggestions for additional branding, ensuring that the mod can evolve and include even more content based on community feedback. This flexibility makes it a valuable addition for fans of bus simulation games.