This game is not as well known as I wish it were, but Myst is positively timeless in itself. Ive beaten Myst a few times in the past, but every few years Ill go back and play it again once I forget the details, and Ive never become sick of it. My grandfather introduced me to Myst when I was about 12 years old, and I immediately became hooked. Fourteen years later at 26, I still love playing this game and it doesnt have that disappointing "old game feel" that so many others do. The puzzles, the exploring, and the thinking required brought Myst to a status above most games Ive played, and the challenging, but not overly-difficult nature of Myst makes it a satisfying achievement to finish it at any age. Myst is a game ahead of its time, for sure.
The iOS adaption is awesome, and Im certainly not disappointed!
I say you should do yourself and your neurons a favor and experience Myst now if you havent already!