The development team tell us:
Ren'Py is a visual novel engine – used by thousands of creators from around the world – that helps you use words, images, and sounds to tell interactive stories that run on computers and mobile devices. These can be both visual novels and life simulation games. The easy to learn script language allows anyone to efficiently write large visual novels, while its Python scripting is enough for complex simulation games. Ren'Py is open source and free for commercial use.
For android development and emulation you need to install Java SE Development Kit.
The base of engine is a application named renpy.
This allow us to update , build and make emulation ( phone, tablet and television) for your game.
You can test all of this by starting one default game.
I don't make a tutorial about how to create a new game, just how to deal with this engine.
You can create a new game by using: + Create New Project.
This will create a new project to start you 2D game novel with your questions and answers , GUI and images.
This can be see on the next screenshot work with this engine:
