My name is Marvin (see: https://marvindanig.com/), and I just released the first version of Bubblin, my project for superbooks. https://bubbl.in/.
Bubblin is all about gorgeous e-books that are possible simply because of the web. You can use it like codepen (a code playground) to write the pages of your book, and publish it like a blog. It can be a lot of fun, I mean serious fun, to do stories/book via code.
For example, I wrote this ~full book on The Solar System:
https://bubbl.in/cover/the-solar-system-by-marvin-danig
... which was supposed to be a small demo initially. I'd initially planned for only 10-15 pages but I ended up writing the whole book instead!
All the code of this superbook is available on Github under MIT license if you want to play:
https://github.com/bubblin/The-Solar-System
Bubblin is pretty basic as of now, but it has a great feel to it. I expect the books to work silky on iPads/tablets but given it's a web approach support is sorta okayish on most platforms - mobile or desktop. I'm not too worried about it right now, but I would love some help/advise on making it omnipresent on any and every device in the world.
I hope you like the project. Good/bad whichever way, help me with your feedback and ideas please!
Yo! - M
Edits: Edited links, 'coz no markdown on HN :(