At the time this game was incredible. Even today though not as smooth as games of today its still just a great game
That said. I definitely suggest looking for the mod for this game. That way the frustrating parts can be overlooked. for example to pick up an item you have to be extremely close to it, and getting to that stop over a few minutes is rather annoying. With the mod you can simply click on the object and pick it up.
Theres lots of puzzles filled with magic, fighting and collecting items for spells and people.
This game is atmospheric and the story is amazing. This is bound to take up hours of your time just getting everything done compared to games of today that are rather short.