Train Sim World 2: BR Class 20 'Chopper' Loco Add-On delivers a focused train simulation experience centered on one of British Railways' earliest diesel locomotives. This add-on brings the English Electric Type 1, later classified as the BR Class 20, to the Tees Valley Line and other compatible routes in a realistic driving environment powered by detailed physics and sound design.
Gameplay
The core loop revolves around operating the Class 20 diesel locomotive with its distinctive single-cab layout positioned at the rear. Controls face both directions, and the forward diesel engine section creates a profile reminiscent of steam tank engines. Players manage acceleration, braking, and adhesion on mixed freight duties, hauling loads such as the included PGA hopper wagons across midlands and Scottish-inspired terrain.
Authentic sound recordings capture the locomotive's engine note, which earned the "Chopper" nickname due to its helicopter-like character under load. Highly detailed cabs replicate real instrumentation and handling characteristics, requiring precise throttle and brake inputs to maintain schedules on light freight services. The SimuGraph vehicle dynamics engine governs traction, speed limits, and route-specific challenges like gradients and visibility when running nose-first.
Headcode discs at each end and the overall 1950s-1960s era presentation add to operational authenticity. The locomotive's 1000hp output suits lighter trains, and players must account for its age and design limitations during extended runs.
Game Modes
Timetable Mode forms the primary long-term play option. The Class 20 integrates into scheduled services on the Tees Valley Line, where additional timetabled freight workings increase traffic density and require coordination with other trains. The same locomotive operates in Timetable Mode on the West Somerset Railway, expanding route variety without altering core mechanics.
Three dedicated scenarios place the loco in specific freight and light mixed-traffic tasks on the Tees Valley Line. These structured sessions test handling under varying conditions and include interactive training modules that introduce cab procedures, route signals, and basic operations step by step.
Scenario creation tools available in the base game allow further customization of services featuring the Class 20, while the add-on's accurate performance data ensures consistent behavior across all modes.
Route Integration and Realism
The add-on emphasizes the Class 20's historical role replacing steam locomotives on regional freight. Its preserved examples and continued heritage use translate into reliable operation on heritage-style routes like the West Somerset Railway. Visual details such as Railfreight livery, cab interiors, and external fittings match documented prototypes from the 1957-1968 production run.
Performance remains true to the locomotive's 746 kW rating and single-cab visibility constraints. Players experience the practical solution of coupling units nose-to-nose for improved forward sightlines on longer consists, doubling available power for heavier loads.
Is It Worth Playing?
This add-on suits players seeking precise diesel locomotive simulation with strong emphasis on British rail heritage and freight operations. The combination of recorded sounds, detailed cab modeling, and physics-driven handling provides a consistent challenge across short training sessions and extended timetable runs.
Those already invested in Train Sim World 2 routes will find immediate value through expanded rolling stock and new services on the Tees Valley Line. The locomotive's enduring presence in preservation adds historical context that enhances repeated play without requiring additional content.
Overall, the package rewards focused attention to authentic controls and route knowledge rather than high-speed variety, making it a solid choice for simulation enthusiasts who prioritize accuracy over arcade elements.
