Train Sim World 6: Tees Valley Line: Darlington to Saltburn-by-the-Sea

Train Sim World 6: Tees Valley Line: Darlington – Saltburn-by-the-Sea is a route add-on developed and published by Dovetail Games, released on August 26, 2025, for the PC version of Train Sim World 6. This downloadable content (DLC) is designed to enhance the simulation experience by adding the historic Tees Valley Line to the game. The DLC is available for purchase on Steam and is compatible with PlayStation and Xbox versions of Train Sim World 6, following its initial release on PC.

The Tees Valley Line route spans approximately 27 miles, connecting Darlington to Saltburn-by-the-Sea in North East England. Set in the late 1980s during the sectorisation of British Rail, the route features the BR Class 08 shunter, Class 37 diesel locomotive, and both 2-car and 3-car Class 101 diesel multiple units. Players can experience a variety of services, including freight operations and regional passenger services, navigating through the scenic countryside and industrial centres of the region. The route is renowned for its challenging gradients and complex track layouts, providing an engaging and realistic simulation experience.

Promotion for the Tees Valley Line DLC emphasized its authentic representation of British rail operations during a transitional period in the nation's railway history. Dovetail Games highlighted the detailed modeling of the locomotives and the immersive environments along the route. Marketing materials showcased the unique characteristics of the Tees Valley Line, appealing to both long-time fans of British railways and newcomers to the franchise. The DLC was positioned as a valuable addition for players seeking a more authentic and engaging simulation experience in the British rail network.

Reception of the Tees Valley Line DLC has been generally positive. Players have praised the scenic beauty and challenging nature of the route, noting the satisfaction of navigating the steep inclines and complex track layouts. The inclusion of the BR Class 08, Class 37, and Class 101 locomotives has been well-received, with many appreciating the variety of services available. However, some players have reported minor issues, such as performance optimization concerns and occasional graphical glitches. Despite these minor drawbacks, the DLC is considered a valuable addition for those seeking a more dynamic and immersive experience in Train Sim World 6.