Still the best adventure game universe ever...
...and the benchmark by which I measure game storylines. Most fall short. It's hard to top a fictional race of people with the ability to create universes by writing books, isn't it? Most developers don't even try, sadly.
The environments are as beautiful and heartbreaking as I remember them; the animation just brings them more to life. Gameplay remains as much of a challenge as it was originally, and when I finished playing, I had pages and pages of handwritten notes, diagrams, and clues.
I also had a deep sense of accomplishment, something most modern games don't provide because their puzzles are far too easy. When you've solved the underground labyrinth in the Selenitic Age, you tend to scoff at childish puzzles like matching pairs, the Towers of Hanoi, 12-piece jigsaws, and Simon Says. That's not gaming! It doesn't even require neurons!
Lastly, the music remains one of the best game soundtracks in the history of gaming. I've listened to it regularly for more than 20 years; it still makes me smile and whisks me off to the island of Myst. I'd love to see realRIVEN and the entire series updated for modern computers.