Train Sim World 6: Horseshoe Curve: Altoona - Johnstown & South Fork Route

Train Sim World 6: Horseshoe Curve: Altoona – Johnstown & South Fork is a downloadable content (DLC) expansion developed by Skyhook Games and published by Dovetail Games. Released on August 26, 2025, this DLC brings to life the iconic Horseshoe Curve route in Pennsylvania, USA, connecting the cities of Altoona and Johnstown, with an additional 15 miles of the historic South Fork Secondary extending to Windber. The route is renowned for its challenging 1.5% westbound grade across the Allegheny Mountains and its elevation of 8,015 feet at Sherman Summit, making it a significant feat in American railroading history. Players can operate Norfolk Southern’s powerful Electro-Motive SD70ACe and SD40-2 locomotives, handling various freight services including double-stack, auto, manifest, and coal trains.

The Horseshoe Curve DLC offers an immersive simulation experience, featuring detailed modeling of the locomotives and the rugged terrain of the route. The addition of volumetric skies and enhanced lighting effects, introduced in Train Sim World 3, provides a more realistic and atmospheric environment. The DLC includes a new timetable and several scenarios, allowing players to engage in diverse operational challenges. The combination of steep gradients, high-altitude operations, and diverse freight services offers a comprehensive and engaging experience for train simulation enthusiasts.

Promotion for the Horseshoe Curve DLC was conducted through various channels, including announcements on Dovetail Games' official forums and social media platforms. The community was engaged through preview streams and discussions, generating anticipation among train simulation enthusiasts. The DLC was made available on multiple platforms, including Steam, PlayStation, Xbox, and Epic Games Store, ensuring broad accessibility to players worldwide. The route's release was anticipated by the community, with discussions and previews generating excitement among train simulation enthusiasts.

Upon release, the Horseshoe Curve DLC received positive feedback from the Train Sim World community. Players praised the detailed modeling of the locomotives and the challenging nature of the route. The steep gradients and scenic landscapes added to the immersive experience. Some players noted that the route's complexity may present a learning curve for newcomers, but many appreciated the depth and realism it brought to the game. Overall, the DLC was well-received, with players expressing interest in more American routes and rolling stock in future releases.