How to Activate Mortal Kombat 11 Steam Key?
After purchasing Mortal Kombat 11 Steam Key, the activation process must be completed. For the activation process, follow these steps:

Log in to the Steam platform.
Click on the "Library" tab on the home page.
Open the menu by clicking the "Add game" button.
You can select the "Activation product on Steam" option.
On the screen that opens, enter the Learn to buy Mortal Kombat 11 Steam Key.
Follow the on-screen instructions to ensure continued activation.