|In Urban Operation there are 5 new missions available,
as well as 5 from the original gamee, with improvements added such as
improved opponent A.I. - for example the terrorists now throw hand grenades.
Also there is a new multi-player level. One goes to locales such as a
market in Istanbul, in a hotel in Hong Kong and the London underground.
There are new weapons (several MG's and a sniper rifle). The environments
are detailed and the missions expansive. Unfortunately, Urban Operations
is over very quickly (that's probably why the developers added the old
missions, but that's not not really a comfort to those buying it), but
while it lasts it is well done. A built-in mod system was added to manage
user-made "mods" or modifications. Previous releases of the Rainbow Six
series did not have this system, and using a mod required overwriting existing
game content. They are installed into a separate folder within the installation
and can be turned on or off. This allowed the addition and/or customization of
all game content, allowing new operatives, weapons, maps, missions, etc. to be added.