For whoever is curious, the free nine games are: GRID, Destiny 2: The Collection, Gylt, Serious Sam Collection, Spitlings, Stacks on Stacks (on Stacks), SteamWorld Dig 2, SteamWorld Quest, and Thumper. Of course, anything else you may want will be tailored to the service.
The free games are a bit underwhelming in my opinion, but it is free for two months, which gives you ample time to test it out on different devices.


