Train Sim World 6: BNSF GP60M & GP60B Loco Add-On delivers a focused expansion for the train simulation genre on PC and other platforms. This add-on centers on two distinctive diesel locomotives from the early 1990s, the GP60M with its wide-nose cab and the cabless GP60B, both originally built for Santa Fe's high-priority intermodal services and later operated by BNSF. Players operate these units across the Cajon Pass route in California, handling mainline and local freight duties with authentic performance characteristics.
Gameplay
The core experience revolves around realistic locomotive operation using the SimuGraph vehicle dynamics engine. The GP60M appears in BNSF H2 and H4 liveries, with the H4 version featuring a rebuilt control stand for updated handling. The GP60B comes in the earlier H1 scheme. Both locomotives include highly detailed cabs with original and rebuilt controls, accurate suspension, and true-to-life power output around 3800 horsepower. New rolling stock expands freight options, including a three-unit articulated spine intermodal car available with multiple loads, ex-Santa Fe cement hoppers in three liveries, and BNSF-branded 89-foot autoracks. These cars integrate into services that emphasize heavy hauling over rugged terrain, with attention to throttle response, braking, and route-specific challenges like grades on the Cajon Pass line.
Additional timetable layers allow integration with Union Pacific services from other routes and static Metrolink equipment on the San Bernardino Line. The add-on supports Livery Designer, Formation Designer, and Scenario Planner tools for custom creations shared through the Creators Club. A dedicated tutorial in the Training Center covers the locomotives' systems for new users.
Game Modes
Scenarios provide structured sessions with specific objectives, including four on the Cajon Pass route and four bonus scenarios on the San Bernardino Line. These focus on mainline intermodal runs, local switching, and mixed freight movements using the new locomotives and cars. Timetable mode introduces a brand-new authentic service schedule for Cajon Pass, placing the GP60M and GP60B into a full day of operations alongside AI traffic. Free Roam allows unrestricted exploration of the route with the add-on content, enabling players to form their own consists and test different combinations of the spine cars, hoppers, and autoracks.
The content remains compatible with prior Train Sim World releases, though full functionality requires ownership of the Cajon Pass and San Bernardino Line routes as separate purchases. No changes to core simulation systems occur beyond the added vehicles and services.
Routes and Content Integration
Primary operations occur on the Cajon Pass route, known for its steep grades and desert scenery in Southern California. The GP60M leads consists through mainline duties, while the GP60B serves as a trailing unit in multi-locomotive setups. The San Bernardino Line scenarios extend the experience with additional freight and commuter-adjacent movements. New cars enhance variety, supporting intermodal, cement, and automotive traffic that matches historical BNSF patterns in the region. The timetable layers expand replayability by layering in equipment from other areas without altering the base route geography.
Is It Worth Playing?
Player reception shows mixed results on Steam with 63 percent positive from a small number of reviews, while console ratings reach 4.86 out of 5 from limited feedback. The add-on suits enthusiasts seeking detailed diesel locomotive simulation on California freight routes, particularly those already invested in the Cajon Pass and San Bernardino Line content. It provides immediate access to new locomotives, cars, scenarios, and a refreshed timetable without requiring a full base game upgrade. Those interested in precise control of 1990s-era power on challenging terrain will find value in the authentic cabs and handling. Broader appeal depends on existing ownership of the recommended routes, as the locomotives perform best within those environments. The release on June 25, 2026, maintains ongoing support through the series' Creators Club features for custom content.
