The "RVTFiX" for F1 2013 is a relic of an era when players fought to keep delisted games playable online. However, downloading .rar files from unverified sources is a high-risk activity. If you choose to proceed, ensure you are using a secondary "throwaway" Steam account and running a deep scan on any extracted .dll files.
: Its main purpose is to allow players with non-original copies of the game to access Steam-based multiplayer servers and play with others online. F1.2013.V1.0.Steamworks.Fix-RVTFiX.rar
It looked familiar, yet transformed. In the top-right corner, where the offline notification usually sat, a green text box blinked to life: The "RVTFiX" for F1 2013 is a relic