SimCity 4THE GOOD: SimCity 4 has the best gameplay of almost any simulation game on the market. Maxis did their best to make this game realistic, and they did a good job of it.
THE BAD: Most people will agree with me when I say that SimCity 4 has a big problem with performance. Once you have a large enough city, the game becomes extremely sluggish. However, the patches released at the official SimCity 4 website address most of these performance issues. I highly recommend that anyone who owns this game, downloads the patches (especially patch 2.)
SUMMARY: SimCity 4 is an excellent game overall. It is a very large step up from the previous installments in the series. It's very layered and much more complex than your average simulation game. If you can't handle SimCity 3000, I suggest you practice a while before purchasing SimCity 4.