Google Play Pass bundles 350 Android games and apps for $4.99 per month

I wonder if the apps that are offered will remain consistent from month to month or if Google plans to change them or simply add to them. I wouldn't want to get in the habit of using an app that I get through this only to have it removed at some point and then I'm stuck not being able to use it without paying for that app. This seems like a good avenue to let users try out software on a "shareware" basis until they eventually decide it's worth the purchase. Not sure how that would work when the app is eventually added back in but it might turn some people off to be double-charged for something like that.

How do stardew valley or terraria do for mobile? I played both on PC and enjoyed, but seems like mobile would be too squished. Is this mostly targeting tablet users?

Which other included games should make me consider getting this? $1.99/mo for first year promo seems interesting, but I'm skeptical I'd be able to get $60 of value at full price.

For someone who is not well versed in Google Android, is this completely out of the blue, or was this well known within Android circles?