SimCity 4/Network Add-on Mod

Here are some of the mods or something like that.

Sim mars
Sim mars is the next level of sim city 4 of modding.New transportation systems,mars-like buildings and more.

Street circles
Instead of stopping like a U-turn,stops turn to circles.

Money tree
This tree gives you 2 billion simleons every month!

A lot more lots
More of these are lots which can be here:

Sim city 4 website