Train Sim World 2: BR Class 33 Loco Add-On is a simulation title centered on realistic diesel locomotive operation. It adds the BR Class 33, a Bo-Bo mixed-traffic diesel-electric locomotive originally ordered in 1957 for British Railways Southern Region, to the existing West Somerset Railway route. Powered by a 1550 horsepower Sulzer engine and capable of reaching 85 mph, the locomotive earned the nickname Cromptons due to its Crompton Parkinson electrical equipment. The add-on recreates two preserved examples in classic BR Green livery with half yellow ends: D6566 (33048) and D6575 (33057) Seagull.
Gameplay
The core loop revolves around authentic diesel driving on heritage lines. Players handle realistic throttle, brake, and electrical systems that match the locomotive specifications from the late 1950s and early 1960s. Scrollable head code blinds allow route-specific signaling adjustments during runs. Controls respond with the expected weight and power delivery of the original Sulzer-powered units, supporting both passenger and freight duties typical of Southern Region operations. The locomotive integrates with the West Somerset Railway environment, where preserved examples operate today.
Historical context shapes the experience through accurate liveries and performance data drawn from the fleet that entered service from December 1959 onward. A total of 98 locomotives were built across three main variants, many seeing use on routes to Dover, steel trains, cement workings, and push-pull services in the South West after fitting with multiple unit equipment. The simulation emphasizes these mixed-traffic capabilities without modern assists.
Game Modes
Three dedicated scenarios place the Class 33 in specific West Somerset Railway tasks that reflect its preserved role during diesel galas. An interactive tutorial introduces the locomotive systems and controls step by step. Service Mode expands options with more than 15 individual services, letting players select timetabled runs across the route at any time. These modes focus on single-player operation and do not introduce multiplayer elements.
Locomotive Details and Route Integration
The add-on supplies two operational preserved locomotives in BR Green livery, matching examples currently based on the West Somerset Railway. Players manage the full range of heritage diesel procedures, from head code setting to power distribution, within the constraints of the 85 mph top speed and 1550 horsepower output. The route itself supports both the new Class 33 and previously available heritage diesels such as the Class 47 and Class 09, creating consistent diesel gala atmospheres.
Is It Worth Playing?
Player feedback on the Steam store rates the add-on as Mostly Positive, with 76 percent approval from the available reviews. Reviewers note the locomotive feels straightforward to operate while delivering satisfying authenticity for those interested in British diesel heritage. The content suits players who already own Train Sim World 2 and the West Somerset Railway route, particularly anyone seeking additional rolling stock for scenario and service play. Those focused on modern high-speed or electric operations will find less immediate appeal, as the package centers exclusively on preserved diesel running. The 79.4 MB download size keeps installation lightweight for existing owners.
