Go for RealMyst. It reportedly runs fine on Intel, and it's real "free" 3D--you can walk around at will. I really enjoyed it. And it adds one extra world to the original Myst, but otherwise replicates the puzzles and the look of the classic.
Also, this recently-released game--which I think may be the start of a series, is Monkey-Island like in its interaction IIRC:
On the Rain-Slick Precipice of Darkness
http://www.rainslick.com/