The Invincible is literally my favourite book of all time - I've discovered it at the age of 12 and kept re-reading it every couple years since then. I'm so happy that the Anglosphere is finally discovering it properly, now that there is a proper modern translation released in 2020, alongside an excellent audiobook recording(previously there was only one English version available.....translated from German, so a translation of a translation).
I've also always wondered if it's possible to somehow translate the ideas of the book into a video game - turns out, you can! The recently released The Invincible video game pays great homage to the book, even if it changes couple details here and there - I've enjoyed it immensely and its portrayal of Regis III.