Unity Ads supports all licensed versions of Unity 2018.1 or later. We always recommend using the latest release version of Unity.
Using the Package Manager to install the Advertisements package (which was renamed to Advertisement Legacy) is strongly recommended. Please see our documentation on Installing the Unity Ads SDK for more information.
We always recommend using the latest version of Unity Ads available to you.
Note that Unity is not a requirement for using Unity Ads. You can still use the Unity Ads SDK if you use a different engine or framework.