To ge them, go to the epic games store.
Click on the game.
Click on the get button.
Verify that the price “You Pay” is Zero.
And then click on the place order button.
The game will be added to your library, and you will get an email about it.
Elite Dangerous
https://www.epicgames.com/store/en-US/product/elite-dangerous/home
The World Next Door
https://www.epicgames.com/store/en-US/product/the-world-next-door/home