[Android] Free interactive fiction on Amazon Underground

Amazon Underground is Amazon’s mobile shopping app which includes an Android Appstore. Amongst the usual paid apps are a bunch of “actually free” apps - paid apps with IAP that cost nothing, and the IAP is already active for free. Its being shut down by Amazon so be quick if you want to get these freebies.

These paid-for interactive-fiction games are all ‘actually free’:

Delight Games (Premium Library)
Sorcery! 2
The Westport Independent
Zombocalypse Now
Appointment with FEAR
Ryan North’s To Be or Not To Be
Choice of Robots

There are also tons of point-and-click adventure games, hidden objects games, RPGs etc.