four_two,
Sorry, I wasn't trying to say it wasn't suitable. Only that it isn't quite as innocent as the first version.
Aerbabe,
I just recently bought Myst 4 and it looks amazing compared to previous versions so far. The last time I saw a price for it, it had dropped a bit. If your dad's computer meets the requirements and he likes these types of games, it might be a good choice. The requirements aren't as bad as many new games, but are higher than the older Myst games.
goates