Xbox Games with Gold January 2021 free titles have been revealed by Microsoft, and includes two titles on Xbox One, Xbox Series X and Series S alongside two Xbox and Xbox 360 backwards compatible titles.
Those who are subscribed to Xbox Live Gold or Xbox Game Pass Ultimate will be able to claim...
I want to say it's one to one, but in all honesty I'm a bit fuzzy there. I can recommend JoyFreak's sister site AdminIntel - Admin & Webmaster Resource where there are lots for people of varying degrees of expertise with development, you likely can get a far more precise answer there!