The Twitch Prime games are GoNNeR (PWYW), The Pillars of the Earth (BTA), Tyranny and Shadow Tactics (BT12).
I must say that, currently, my take on Twitch Prime is “somewhere between an extended demo and full citizenship”.
Sure, I can play a game to completion how many times I want, but all of these games are missing perks that would be available on Steam, so the bundle is not without value even for those who have them there.
As noted, it’s a matter of putting a price tag on the Steam perks, and that depends on how much one personally likes these games.
My wishlist games, here, are Tyranny and Shadow Tactics. The latter is a good isometric stealth’em up inspired by Commandos, with ninjas and samurais, which was generally very well praised and by RPS, too.
This War of Mine is IMO an incredibly overrated game, owing to its setting being obviously modeled after the Yugoslav Wars of the '90s. That aspect is kind of see-through, though, and the game bones under it are not very fleshy: a basic survival management game that’s not engaging to play, and the pretense bleakness gets grating IMO.
Dear Esther is the seminal walking simulator and a recommended addition to the libraries of anybody with an interest in this kind of games.
I played some Pillars of the Earth on Twitch and came away frustrated with the amount of railroading in there: with hindsight being 20/20, this may sound not entirely unexpected, however, in a game, I do expect a little more pay-off for the time I put in making these decisions; in one section I replayed multiple times, I could see literally no changes to the way it would play out, except a mention at the episode’s summary screen, that I had no indication would have made some difference later.
Still, it’s an intriguing setting, and the game seems to be built out of the best parts of the novel, with some subtle but appreciable changes, so much that I came away with the impression, that it had a chance to be better than reading the book.
Since I have bounced off Pillars of Eternity, I haven’t played Tyranny yet, so I’m planning to get my feet wet there and then make up my mind.