RenPy

Ren'Py is an engine that supports the creation of visual novels, a form of computer-mediated Story Telling. It supports a movie script-like syntax that makes creating simple Computer Games easy, while still being customizable and extensible by advanced creators. With no additional work by the game-maker, it supports features expected of all visual novels, like loading, saving, preferences, and rollback. http://www.renpy.org/wiki/renpy/Home_Page

looks like it might be based on Python?

Android packaging https://www.renpy.org/doc/html/android.html

• cf JoiPlay? https://www.patreon.com/joiplay https://play.google.com/store/apps/details?id=cyou.joiplay.joiplay&hl=en_US&gl=US