The entire plot of the movie is included. You could play through entire story, but in practice that would take a very long time, even with digressions -- and even then, it would be the story just through a specific character's perspective.
The idea was to make something that stood alongside the movie as a companion piece, an alternative way of experiencing it, rather than just a promotional thing. It's been fun seeing players playing for 4+ hours and barely getting through the first half, when the movie itself is 90 minutes and change.
I may try to post a Show HN later this week with more details, since the technical details are kind of fun. It's fully custom-coded and uses some LLMs under the hood (more as a 'game master' than in a creative capacity). I worked with the writer/director of the film to translate the script to a more interactive-friendly format, but he basically did the interactive adaptation himself.
I worked on the movie as a technical consultant and they credited me as 'unix wrangler' (I can check having an imdb page off my bucket list I guess)...
Easter eggs if anyone finds this and reads this far: try typing 'chloe' or 'camus' in the character selection screen.