You buy the official key of the game Headlander
Platform - Steam
Localization - Russian, English and other languages
Regional restrictions - no
- Download and install Steam - http://steampowered.com/download/SteamInstall.msi
- Register Steam Account
- Go to the "Games" and select "Activate via Steam"
- Enter the activation key
- After that, the game will appear in the list and you can download it.