As a big fan of Myst and Riven, I was excited to buy this game. I would be more excited if I were actually able to play it. I found that the game crashed constantly. I have spent hour upon hour trying to get my system in perfect alignment with the planets as decreed by Ubisoft; I had no trouble installing and playing Myst and Riven. Though the technical requirements listed in the User's Guide clearly state that a 3D video card is optional, Ubisoft technical support, answering an email after two weeks rather than the promised 24 hours, told me that in order to play the game I would have to purchase a new 3D video card. Uh, no thanks. I just won't buy any more of your products.