Your subscription comes with a free bonus reward of 2 - 5 premium assets, every month. These bonus assets are selected just for you, and they get more relevant the more you use Megascans.
Your bonus assets will drop on the date you subscribed. So, if your subscription date is the 25th, your assets will drop on the 25th of each month, even if you have an annual subscription. When your drop is ready, you’ll find these assets in the “Free” tab with a “Bonus” label, and you can download them for the entire month until they are replaced with the next bonus drop.