Corrupted or missing files can prevent the game from recognizing your Steam status.
If you have recently purchased a physical disc copy, received a key from a third-party retailer, or downloaded the game from a non-Steam storefront, you may have been met with an abrupt and immovable roadblock: a pop-up window demanding that you install and launch the game through Steam.
– Make sure you're using the correct store version.
If you have already purchased the game and see this message, follow these steps to resolve it:
If you own a legitimate Steam-activated copy, follow these steps to ensure you never see the “Steam is required” message:
