The mod is an attempt to mimic the chaos mods from GTA San Andreas and GTA Vice City.
Every 30 seconds the game will trigger a random effect. This effect can be anything from giving you an RPG to blowing up all nearby vehicles or making every nearby ped dance.
There are one-time and synchronized effects. Simultaneous effects will only run once when the effect starts, while temporary effects will run for 90 seconds (default) after they run.
This makes the gameplay much more awesome, as literally anything can happen every time an effect starts. Now there are more than 180 unique effects in fashion.
The mod also comes with a simple customization tool.