For the newest challenge #237, I've created a concept of an interactive map - menu, where you can fly freely and choose the topic. Use the arrows to move the spaceship. This is one screen example to show the idea of navigation. You can move the space ship but there is no option to start the topic or test :)
Project in action: https://storylinec.s3.eu-central-1.amazonaws.com/SLC+%23237/story_html5.html
If you are interested in seeing behind the scene of this project, you can download the source file for the 'developer mode'.
Developer mode in action: https://storylinec.s3.eu-central-1.amazonaws.com/%23SLC+237_developer/story_html5.html
Please note that these images are under copyrights so you can't use them in your project. If there are any questions, I would be happy to answer.