What Actually Is The MC Command Centre Mod?

It's a mod along the lines of the nrass mod for Sims 3 it adds story progression and a bunch of other stuff. It comes indifferent modules so you can pick and choose what elements of it you want to add to your game. Some people (like myself) use the whole mod to do various things in our games others might only want the story progression or might only want the occult mod to turn off to deal with aliens. It varies depending what you're needing in the game. It's definitely not a mod for everyone and it can be a bit big and complicated to figure out sometimes. But once you get the hang of it it can bring a lot to your gameplay.

THIS is the main thread about it over in the mods section of the forum. It's probably the best place to go to gather information about it.