From 1994/5 to 1999, Myst was the main adventure game we replayed. I am well past 25 times on it, probably well past 125 times. After awhile we were making new games for ourselves using it: I.E.: Name a new constellation (planetarium), shapes in static, bark, clouds (This was a rainy day activity. Otherwise I'd have used my backyard) The race to Atrus etc etc etc
Actually I ended up replaying all the games I had at least 3-5 times & probably many more times. {Zork/Infocom games, Gobliins, Lost Vikings, RTZ, Simon 1, Labyrinth of Time, Freddy Pharkas, Journeyman Project 1, Eric the Unready...} We've replayed favorite rpgs like Lufia & Chronotrigger quite a few times too. In fact some games like Pandora's Box, Spyro, Zelda (any) & Civilization are always on the computer/console because someone is always in the middle of a game.
In the fall of 1999 we got a new compy & I acquired several more titles soon afterward which I proceeded to play & replay: Riven (especially), Journeyman Project trilogy, RotS, etc...
I played realMyst again recently as soon as we set up the new compy and was amused to find that after at least 5 months I still have all the codes memorized. I haven't been replaying Myst & Riven nearly as much since I started accumulating my own BAAGs to-play pile. Now with Uru to finish & replay as well I have more things to play than time to play them
That said, we still replay some adventure games.
We have replayed ZGI 3x already & we only got that one going last summer! We still visit the sunners & Myst island occasionally but I'm not playing to the end very often.
Susan