After payment, you will instantly receive a license key to activate Metro 2033 Redux on Steam.
Attention: the game can only be activated in one of the following countries: Russia, Armenia, Azerbaijan, Belarus, Georgia, Kyrgyzstan, Kazakhstan, Republic of Moldova Moldova, Tajikistan, Turkmenistan, Ukraine and Uzbekistan.
1) If you have not installed the Steam client, download and install it.
2) Log in to your Steam account or register a new one if you do not have one.
3) Go to the "Games" section and select "Activate via Steam ...".
4) Enter the activation key.
5) After that, the game will be in your Steam library, and you can download.