DLC Language

Why are not the DLC’s in other languages?
The main game is available in: German, English, French, Italian, Spanish, Polish, Portuguese, Russian and Simplified Chinese.
Why the DLC’s only in English?
I would buy any DLC, but I can not speak English that well.
It is really sad and lost potential.

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It’s good to know that the main game is available in more than just the English language.
There are so many people who are not very fluent in English – they will find it convenient if they can get the DLC in their native tongue!