Train Sim World: BR Class 33 Loco Add-On is a simulation title that adds a detailed diesel-electric locomotive to the West Somerset Railway route. Players operate this classic British Railways machine in a realistic rail environment focused on heritage operations.
Gameplay
The core experience centers on driving the BR Class 33, a Bo-Bo mixed-traffic locomotive powered by a 1550 horsepower Sulzer engine. Controls replicate the original design with Crompton Parkinson electrical systems, and the model includes scrollable head code blinds for route identification. Driving characteristics emphasize authentic acceleration, braking, and handling at speeds up to 85 mph.
Two preserved examples appear in BR Green livery with half-yellow ends: D6566 numbered 33048 and D6575 named Seagull. These locomotives integrate into existing route services, allowing operation across passenger, freight, and engineering duties typical of the Southern Region in earlier decades.
Interactive elements extend to cab functions that respond to player inputs during runs. The add-on supports the route's diesel gala atmosphere through precise modeling of the locomotive's role in mixed-traffic work.
Game Modes
Service Mode places the Class 33 into more than 15 scheduled services on the West Somerset Railway. These include varied duties that reflect historical patterns such as passenger runs and freight movements.
Three dedicated scenarios provide structured sessions with specific objectives tied to the locomotive. An interactive tutorial introduces the controls and operational procedures before players attempt full services.
All content ties directly to the preserved locomotives and the route's heritage setting, with no additional modes introduced beyond these verified options.
The BR Class 33 in Context
Built between 1959 and 1962, the original fleet of 98 locomotives served extensively across the Southern Region. They handled key routes including services to Dover, steel trains, cement workings, and push-pull operations in the South West after certain units received multiple-unit equipment.
Twenty-nine examples survive in preservation, with several mainline certified. The add-on recreates two operational examples from the West Somerset Railway in their classic appearance, extending the route's available diesel roster alongside other heritage locomotives.
Is It Worth Playing?
This add-on suits players who enjoy detailed train simulation with a focus on a single historic locomotive type. The combination of authentic controls, multiple services in Service Mode, and scenario content provides substantial playtime for those already invested in the West Somerset Railway route.
Owners seeking expanded diesel operations on that line will find the Class 33 a direct addition that matches the route's preservation theme. Those new to the series may first explore the base route before adding this locomotive for targeted heritage runs.
