DOOM 3 – How to insert the CD key

Hice this guide, for I notice that many have had problems with the CD-Key.

CD keyboard guide

Before you start the game, you need to know your code and how? Easy!

  1. See it in your Steam library.
  2. Click DOOM 3 with the mouse to the right.
  3. Manage.
  4. Product codes.

Once you have seen your code, you can open the game.

When the game is opened, a window will appear indicating that you have entered the code. Remember that the former is practically already written, as much as the first on the left as the last two on the right. You should only write below, but in lower case and not uppercase. Fits well into the passages of these images.

Do not share your code with anyone, it is unique and just for you!

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