Right.. so picture a scenario where the NCR were pushed out of Mojave, the Legion were almost completely destroyed, and Mr.House was killed. New vegas is run by two major gangs that operate under the leadership of a anomynous figure. Traders can come and go.

So.. what would the world be like west of New Vegas during this time? My geography svcks, so if I can get some enlightenment on cities that are no more then 200 to 300 miles away from New Vegas, airports, military bases, and points of interest.

This thread can be used to discuss other things pertaining to the topic, such as California's state and what not.

You do know that NCR owns the whole of California right? That there presence in Vegas was just a army detachment....

Andaius is right NCR controls from southern Oregon to Baja Mexico and all of California and into Northern Nevada.

Legion control all of Arizona and are in New Mexico, Utah, Colorado and chances are into Mexico.

If somehow New Vegas mobsters managed to kill off Mr.House, defeat NCR and the Legion in the Mojave. The Legion and NCR would just come back. If these Mobsters took over New Vegas NCR would just cut the power to the city.

Not all of Utha, New Caanan's free (I think)!

(Elven wolf is right, the Legion only controls Arizona, New Mexico, most of Colorado, and most of Utah, so the area around New Caanan would more than likely be free, i do not want to say why because of spoilers.)

It would only be a matter of time before NCR loses control over west coast if they don't win at Hoover Dam so I'd say it'd be like in FO3 once the raider population starts increasing.

How much time? I don't see NCR falling apart if they lose the Mojave. President Kimball would be in trouble but NCR would not fall, hard times is likely. Its also a matter if time before the Legion falls apart when caesar kicks the bucket.

(Gotta go with ol' Styles here, Kimball would likely lose the presidency because of his actions of losing the Mojave, but the NCR would not fall apart, not one chance of it. The Legion, without Caesar or Lenius, it would fall apart in years, and their territories will be in chaos soon enough. Good call Styles.) :thumbsup:

For one I'd expect a revolution or two, other than that I really see it as that they will lose a crapload of money due to their loss at the dam, with the loss of money they have to cut down on certain aspects, one being military, if the law is cut down then the less prosperous towns and cities will have the NCR law enforcement taken away.
When that happens then it's only a matter of time before someone with the ability to place words right to start his/her own faction and rules the town/city his/her way or until a raider band attacks the town.
With NCR being cut back a lot of land will be unprotected, with that follows raiders and other factions being born.
When the roads become unsafe for trading a lot of isolationism will happen and supply and demand will go down the toilet.
Then people will set sight on the good stuff, greed will overcome raiders and new factions as their mouths get watery from watching NCR's fun stuff.
At some point there will be war between NCR and these new factions, question is, can NCR handle them?
I'd say it's a 50/50, maybe and maybe not.
But if not then the lands will once again slowly be set back to square one.

Legion on the other hand, they view Caesar as their god, willing to give their lives for the man.
But can Caesar die?
Sure enough the current holder of the title can die, but upon his death someone else will take the title and become the new Caesar.
Basically Caesar>Lanius>Lucius>Vulpes>et cetera.
If the manifestation of Caesar dies then the next in command will take his throne and run things his way.
I don't see Legion falling apart unless a future Caesar is completely incompetent and runs it into the grave or if another superpower finds and kills everyone of them or if 4 Caesar in a row is killed in a timespan of 1 year.

That's the way I see it. :shrug:
But I'd say that the NCR part is under a timespan of 5 to 20 years.

If NCR loses the Mojave I doubt they would fall. I can see rebellions and such but NCR can put them down. If the BoS have a state within NCR that would be an example of a rebellion but we we given no evidence that NCR is having trouble with the BoS back west.

If people dont like NCR they would leave which is what they are doing. They run into the Legion and crap themselves "maybe the NCR is not so bad." If the Mojave falls I can see the people of NCR being more dedicated to stop the Legion. History has shown that people fight harder when the enemy is on your door step.

I don't things will be all peaches and cream for NCR but they would not fall.

Still we are going off topic are we not? The OP asked what would happen if somehow Mobsters won against NCR, The Legion and Mr.House.

Most all land west of Vegas has been recivilized by the NCR by 2281.

Those mobsters must have an army of epic proportions to do that.Of course, if they did, they would probably cease to be mobsters.
The whole scenario is pretty unrealistic, unless the OP is referring to the Courier taking over.