Click the button located in the bottom-left corner. Select "Activate a Product on Steam..." . Enter your unique activation key and click "Confirm".

: Often provides the full version of the game and sometimes offers the Hello Neighbor Mod Kit for free.

When searching for a "download key for Hello Neighbor," you may encounter websites claiming to offer free generators or cracked keys.

If you've purchased a key from a third-party retailer, follow these steps to download the game: Launch the and log into your account.