Train Sim World 6: Peninsula Corridor: MP36PH-3C Express Loco

The Peninsula Corridor: MP36PH-3C Express Loco add-on for Train Sim World 6 was developed and published by Dovetail Games and released on October 16, 2025. This DLC expands the existing Peninsula Corridor: San Francisco – San Jose route by adding the MP36PH-3C locomotive, a modern commuter express diesel used by Caltrain since 2003. It enables players to take on high-speed express duties between major Bay Area stations, enhancing the scope of the base route with a new motive power option.

Within the add-on, players get to operate the MP36PH-3C locomotive in its real-world livery, complete with accurate modelling of its 3,600 hp power unit, full cab instrumentation, crash-worthy design details, and real-life performance characteristics. The DLC supports multiple scenarios, including express passenger services and yard/rescue tasks, providing both high-speed runs and operational variety. The locomotive is integrated into the timetable and service mode for the route, giving players opportunities to experience its capabilities in realistic commuter service patterns.

Promotion for the MP36PH-3C Express Loco was carried out through Dovetail Games’ standard channels: Steam store announcements, social media posts, and forum previews on the Train Sim World community. Marketing emphasised the “express commuter” role of the MP36PH-3C on the Peninsula Corridor, highlighting the new locomotive’s speed, modern features, and how it complements the existing fleet on the route. Images and clips showing the train in action southbound through the Bay Area were used to build anticipation among players interested in U.S. commuter operations.

Reception from the community was generally positive. Many players praised the realistic modelling of the MP36PH-3C — the detailed cab, accurate running gear, and integration of the locomotive into the express services were especially noted. Some users commented that this add-on brought welcome variety to the Peninsula Corridor route, which previously focused on older motive power and passenger traffic. A few critiques mentioned that the base route’s visuals felt somewhat dated compared to more modern releases, but overall the MP36PH-3C add-on was regarded as a strong addition to the Train Sim World 6 library for fans of North American commuter rail operations.