Answer 1

In SoloLearn you can only make (graphical) games using Web. For that you would need JavaScript, CSS and HTML. Using any other language it would be difficult to build text-based games as user input cannot be collected at runtime.
By the way please use relevant tags.

Answer 2

https://code.sololearn.com/WvIsS7qN8npX/?ref=app

Answer 3

If you finished the challenge you can see the quiz factory you can click on it and click on suggest a quiz then you can create your own interesting quiz on it!😉