To supplement Boneho's post, the Myst games are
Myst III: Exile and
Myst IV: Revelation. There is
Shadow of Destiny as well. (the links take you to the reviews for the games)
Here are the reviews for:
Syberia 1
Syberia 2
Broken Sword: The Sleeping Dragon
Still Life (this is definitely not a game for kids
)
Indigo Prophecy (again, definitely not a kids' game)
Oh and welcome to the forums shanie.