Myst, one of the games I so love, I always get the collectors edition when they come out
I wasnt too impressed with what I got as 'extra' with the Revelation pack, but oh well, the game is worth it all the way. With Revelation, the bit thing that I've noticed is the interaction with the world around you. Rather than just click on an object and having a cinematic load, you turn the handles, pull open doors, turn pages in books. That what made it more impressive for me
The puzzles in four are definetly up to standard, I'm currently stuck on a few, mainly the toneing puzzle on Spire, the answer is there, I'm pretty sure, I'll just have to look for it.