Product Key For Euro Truck Simulator 2 1.15.1 ((link))

Navigate to the top menu and select "Games" or click "+ Add a Game" in the bottom-left corner. Step 3: Select "Activate a Product on Steam..."

Activating your key on Steam allows the game to automatically update and seamlessly manage any purchased DLC. Launch the Steam Client on your desktop.

Enter your purchased activation key in the prompted field.

When prompted by the activation screen, type in your 25-digit legacy product key . Step 4: Once activated, restore your internet connection. 🔑 Common Legacy Product Keys

Ensure you are matching the correct format. A Steam key has three groups of five characters, while the legacy game uses five groups of five characters.