If you like Dear Esther.
The version of Dear Esther on offer is the Landmark Edition, which is the original game but remade in the Unity engine, "featuring a full audio remaster and the addition of a brand-new directors' commentary mode".
The other four titles are the classic Grip: Combat Racing, the 2019 side-scroller Dark Devotion, and the fast-paced action-platformer Kunai. They a number of other free games available with Twitch Prime right now, with titles like PictoQuest and Samurai Shodown II on offer for the low, low price of nuthin' for a little while yet. Grab them over on the Twitch Prime website.
Aside from the free games, Twitch Prime can currently grab some in-game goodies, too. There's a free $1m in GTA Cash up for grabs every month, for example, while Rainbow Six Siege players can pick up a sweet set of cosmetics for Lesion.
All of these bonuses are included at no extra cost with a Twitch Prime subscription, which is itself included in an Amazon Prime hip. Twitch / Amazon Prime hip costs $13 / £8 per month or $119 / £79 per year.