: Find the "Live Access Code" or "CD Key" in the manual of a physical box. Activate on Steam : Open Steam and click + Add a Game in the bottom left. Select Activate a Product on Steam .
Enter your key when prompted; Steam should automatically convert it to the . 3. System Requirements Dirt-3-Download-PC-Game
Since the game is older, you may encounter issues on modern hardware: : Find the "Live Access Code" or "CD