https://store.steampowered.com/app/24010/Train_Simulator_Classic/

Here you can buy the key Train Simulator Classic at a bargain price. After purchase, you will immediately receive a key, after activating which you will add Train Simulator Classic to the steam library.
This key only activates the game itself, DLC is not included.

Key can only be activated in these countries: Russia, Ukraine, Armenia, Azerbaijan, Belarus, Georgia, Kyrgyzstan, Kazakhstan, Moldova, Republic of Moldova, Tajikistan, Turkmenistan, Uzbekistan.

Description Train Simulator Classic:
Train Simulator Classic is your ultimate railway hobby. Learn to operate officially licensed iconic locomotives across realistic detailed routes from around the world. With something for all railfans this is the perfect place to start the virtual train collection of your dreams.
The picturesque countryside of Bavaria awaits! Lean into the scenic unelectrified curves and lush forested hills of Germany with Pegnitztalbahn: Nürnberg - Bayreuth. Take on the tilting challenge of the DB BR 612’s unique controls as you make easy work of the 93 km detailed route. Explore 19 authentically recreated stations with this and other locomotives like the DB BR 605 ICE-TD and DB BR 648.

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Key activation instructions:
1. After purchase, you receive a unique key that you need to copy and enter into the Steam client.
2. Opens steam. We are looking for the button "Add game" in the lower left corner, then click on "Activate in steam"
3. In the appeared window, insert the format key - HHHHH-HHHHH-HHHHH
4. After activation, the game will appear in your library.