Buy Train Simulator Classic Train Simulator: Network SouthEast Class 121 DMU Add-On PC key
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About Train Simulator Classic Train Simulator: Network SouthEast Class 121 DMU Add-On
The Train Simulator Classic Train Simulator: Network SouthEast Class 121 DMU Add-On adds the Class 121 “Bubble Car” in Network SouthEast livery, recreating its operation between London and the western Home Counties in the 1980s. These unusual single-car diesel multiple units were manufactured by the Pressed Steel Company from 1960 onwards and introduced by British Rail mainly for Western Region services and suburban and branch-line duties around London.
The Class 121
The model features the prominent exhaust pipes at the motor end, designed to fit around a large four-digit headcode indicator box, along with a manual gear change, passenger view and slightly weathered finish. The units became familiar on Network SouthEast services. After British Rail was privatised, Silverlink operated the fleet for passenger services, while several more units worked in departmental duties with Railtrack.
Two Class 121s remain in revenue-generating service with Chiltern Railways, and five motor cars are preserved on heritage railways in the UK. The two in service represent the last chance to ride 1960s slam-door stock on the UK main line.
Scenarios and driving
The add-on is Quick Drive compatible, so you can drive the Class 121 on any Quick Drive-enabled Train Simulator route. It also includes three scenarios for the Great Western Main Line route, which is required to play them:
- Training: Class 121 Simple & Expert Controls
- Tourist Shuttle
- No Go for Greenford
Frequently asked questions
The best price for Train Simulator Classic Train Simulator: Network SouthEast Class 121 DMU Add-On is $19.99 at Steam. It is the only shop with an offer that activates in your country.
No. Train Simulator Classic Train Simulator: Network SouthEast Class 121 DMU Add-On is DLC and only works with Train Simulator Classic.
The minimum requirements for Train Simulator Classic are: Windows 10, GeForce GTX 750 Ti, Intel Core i3-4330, 4 GB RAM, 40 GB storage. It runs on Windows only. The recommended specs are in the System requirements section.
No. Train Simulator Classic is a single-player game.
Mostly, yes. Valve rates Train Simulator Classic as Playable on the Steam Deck: it runs, but may need some manual setup.
Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.
Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.












