The Novosibirsk Riots were a series of riots that occurred in the Novosibirsk Metro, and quickly escalated into a full-fledged civil war that wiped out most of the Metro population.
When the war broke out, much of the population of Novosibirsk sought refuge in the city's metro system, and came under the command of OSKOM, a local military unit. Despite shielding them from the initial bombing, however, the Metro was too shallow to offer significant protection against radiation. This problem was exacerbated as the city had been struck with a cobalt bomb, forcing the survivors to rely on regular doses of the anti-radiation drug Radioprotector, known colloquially as "Green Stuff."
By 2035, the drug, as well as supplies in general, began to run out. OSKOM began preparing for the evacuation of personnel and civilians out of Novosibirsk, while sending out stalkers to search the local sat-com center for a radiation map that would, hopefully, reveal a clean zone that the survivors could settle. This endeavour yielded little result, however, and as time went by OSKOM was forced to confiscate the excess green stuff from citizens.
This, combined with the secrecy surrounding the evacuation plans, led some residents to draw the conclusion that OSKOM was planning to abandon the civilians, a sentiment that was only inflamed when word got out that the leadership would be evacuated first.
What began as a series of riots quickly escalated into a full-fledged civil war between OSKOM and the Metro population. While OSKOM were better armed than the rioters, even building a makeshift tank, they appear to have been heavily outnumbered. The conflict led to heavy casualties on both sides. While OSKOM mowed down waves of rioters, their lines of defenses were eventually overwhelmed.
Eventually, both the OSKOM soldiers and the rioters were gassed, as the OSKOM high-command betrayed their soldiers and evacuated without them, reasoning that there was only enough green stuff for a few. General Vinogradov, who had been part of the conspiracy, was disgruntled over being left behind. He ordered his remaining men to intercept the train and destroy it, before committing suicide. They were presumably successful in destroying the train, as no sign of OSKOM is encountered at Lake Baikal, their intended destination.
By December of 2035, nearly all of the Metro's population has been wiped out. The once populated stations have became infested with mutants, particularly nosalis. The only two known survivors of the conflict are Colonel Khlebnikov and his son, Kirill.