Destiny 2: The Collection, Grid, Gylt, SteamWorld Dig 2, SteamWorld Quest: Hand of Gilgamech, Thumper, Serious Sam Collection, Spitlings, and Stacks On Stacks (On Stacks)
Service itself is grest, destiny 2 works very well. If you think the resolution is too low, try installing the stadia+ extension. It gets the higher quality 4k stream and downscales it to lower resolution monitors. It looks sharper for sure.
Agreed. Like I mentioned above, I really only signed on for Gylt and to just check it out in general.
Worth noting that the Destiny 2 collection includes the expansions (which aren't free) if that's something you might care about. But I 100% agree that this is a sad, sad lineup.
EDIT: this is what their storefront / pricing looks like for those interested:
(aka not exciting!)