Gameplay flows nicely. You always know when you've placed your structures in the right place. The interface is laid out easy to understand. Graphics are sharp and crisp. At almost any resolution you can see the different characters and identify what they are.
Sounds are crystal clear.
I like the occasional comment from the crowd that popps out from time to time. Everywhere in the game, the more lighthearted approach is evident. Mission briefings are littered with bad puns. Citizens have a hatful of cheesy one liners that they utter at random. Gods walk the streets.