Iris – A Social Issues. Suitable for anyone age 9+.
Find more info here.
Tick-Tock – A Fantasy Adventure. Suitable for all
Or read more about it here: Tick-Tock
Double/Cross – Interactive Fiction Game for YA +
Available on the App Store, Android, Google and Kindle
Play the first few chapters for free here: To Double/Cross!
Or read more about it here: Double/Cross